Diamond Prices Chart 2020 | Calculate Diamond Prices

Diamond Prices Chart 2020 | Calculate Diamond Prices

Diamond Prices Chart 2020 | Calculate Diamond Prices

Posted by Sharif Khan on 22nd Feb 2020

Average Diamond Prices Index

Average 1 Carat Price Index

Compare Online Prices Here.

1 Carat Round Cut - Best Petra Gems Estimate - Average Price
Clarity D
Wholesale Retail
VS2 $ 6,180 $ 8,034
VS1 $ 6,768 $ 8,798
VVS2 $ 7,680 $ 9,984
VVS1 $ 8,760 $ 11,388
IF $ 10,188 $ 13,244
FL $ 12,311 $ 16,004
Clarity E
Wholesale Retail
VS2 $ 5,841 $ 7,593
VS1 $ 6,313 $ 8,207
VVS2 $ 6,254 $ 8,130
VVS1 $ 7,906 $ 10,278
IF $ 8,614 $ 11,198
FL $ 10,220 $ 13,286
Clarity F
Wholesale Retail
VS2 $ 5,697 $ 7,406
VS1 $ 6,112 $ 7,946
VVS2 $ 6,136 $ 7,977
VVS1 $ 6,750 $ 8,774
IF $ 6,840 $ 8,892
FL $ 7,866 $ 10,226
Clarity G
Wholesale Retail
VS2 $ 5,278 $ 6,914
VS1 $ 5,614 $ 7,355
VVS2 $ 5,858 $ 7,674
VVS1 $ 6,318 $ 8,277
IF $ 6,630 $ 8,686
FL $ 7,586 $ 9,937
Clarity H
Wholesale Retail
VS2 $ 4,976 $ 6,568
VS1 $ 5,047 $ 6,663
VVS2 $ 5,327 $ 7,031
VVS1 $ 5,558 $ 7,336
IF $ 5,897 $ 7,784
FL $ 6,653 $ 8,782

James Allen

Average 1.5 Carat Price Index

Second Reference for Comparing Prices Online (Here)

1.5 Carat Round Cut - Best Petra Gems Estimate - Average Price
Clarity D
Wholesale Retail
VS2 $ 14,159 $ 18,406
VS1 $ 14,040 $ 18,252
VVS2 $ 16,175 $ 21,027
VVS1 $ 18,540 $ 24,102
IF $ 21,330 $ 27,729
FL $ 26,307 $ 34,199
Clarity E
Wholesale Retail
VS2 $ 12,672 $ 16,474
VS1 $ 14,355 $ 18,662
VVS2 $ 14,992 $ 19,490
VVS1 $ 17,744 $ 23,068
IF $ 18,540 $ 24,102
FL $ 21,321 $ 27,717
Clarity F
Wholesale Retail
VS2 $ 12,276 $ 15,959
VS1 $ 14,130 $ 18,369
VVS2 $ 14,616 $ 19,001
VVS1 $ 15,120 $ 19,656
IF $ 15,300 $ 19,890
FL $ 17,213 $ 22,376
Clarity G
Wholesale Retail
VS2 $ 11,507 $ 15,075
VS1 $ 12,308 $ 16,124
VVS2 $ 12,760 $ 16,716
VVS1 $ 13,698 $ 17,944
IF $ 13,750 $ 18,013
FL $ 14,896 $ 19,514
Clarity H
Wholesale Retail
VS2 $ 8,852 $ 11,685
VS1 $ 9,252 $ 12,213
VVS2 $ 9,580 $ 12,645
VVS1 $ 9,682 $ 12,781
IF $ 10,640 $ 14,045
FL $ 11,526 $ 15,215

Average 2 Carat Price Index

Third Reference for Comparing Diamond Prices (Here)

2 Carat Round Cut - Best Petra Gems Estimate - Average Price
Clarity D
Wholesale Retail
VS2 $ 24,077 $ 28,892
VS1 $ 26,146 $ 31,375
VVS2 $ 31,075 $ 37,290
VVS1 $ 33,888 $ 40,666
IF $ 37,440 $ 44,928
FL $ 49,920 $ 59,904
Clarity E
Wholesale Retail
VS2 $ 24,720 $ 29,664
VS1 $ 25,920 $ 31,104
VVS2 $ 28,800 $ 34,560
VVS1 $ 33,142 $ 39,770
IF $ 36,072 $ 43,286
FL $ 45,090 $ 54,108
Clarity F
Wholesale Retail
VS2 $ 23,304 $ 27,965
VS1 $ 24,840 $ 29,808
VVS2 $ 27,696 $ 33,235
VVS1 $ 30,264 $ 36,317
IF $ 31,680 $ 38,016
FL $ 36,960 $ 44,352
Clarity G
Wholesale Retail
VS2 $ 21,118 $ 25,552
VS1 $ 22,289 $ 26,969
VVS2 $ 24,240 $ 29,330
VVS1 $ 25,224 $ 30,521
IF $ 26,880 $ 32,525
FL $ 30,240 $ 36,590
Clarity H
Wholesale Retail
VS2 $ 18,480 $ 22,915
VS1 $ 19,656 $ 24,373
VVS2 $ 21,576 $ 26,754
VVS1 $ 22,990 $ 28,507
IF $ 23,136 $ 28,689
FL $ 25,450 $ 31,558

 Average 3 Carat Price Index

3 Carat Round Cut - Best Petra Gems Estimate - Average Price
Clarity D
Wholesale Retail
VS2 $ 24,077 $ 28,892
VS1 $ 26,146 $ 31,375
VVS2 $ 31,075 $ 37,290
VVS1 $ 33,888 $ 40,666
IF $ 37,440 $ 44,928
FL $ 49,920 $ 59,904
Clarity E
Wholesale Retail
VS2 $ 24,720 $ 29,664
VS1 $ 25,920 $ 31,104
VVS2 $ 28,800 $ 34,560
VVS1 $ 33,142 $ 39,770
IF $ 36,072 $ 43,286
FL $ 45,090 $ 54,108
Clarity F
Wholesale Retail
VS2 $ 23,304 $ 27,965
VS1 $ 24,840 $ 29,808
VVS2 $ 27,696 $ 33,235
VVS1 $ 30,264 $ 36,317
IF $ 31,680 $ 38,016
FL $ 36,960 $ 44,352
Clarity G
Wholesale Retail
VS2 $ 21,118 $ 25,552
VS1 $ 22,289 $ 26,969
VVS2 $ 24,240 $ 29,330
VVS1 $ 25,224 $ 30,521
IF $ 26,880 $ 32,525
FL $ 30,240 $ 36,590
Clarity H
Wholesale Retail
VS2 $ 18,480 $ 22,915
VS1 $ 19,656 $ 24,373
VVS2 $ 21,576 $ 26,754
VVS1 $ 22,990 $ 28,507
IF $ 23,136 $ 28,689
FL $ 25,450 $ 31,558


  • This price index for 1 carat, 1.5 carat, 2 carat, and 3 carat diamonds will be updated periodically to reflect changing retail and wholesale diamond prices.
  • The second section of this article will explain how diamond prices are determined and calculated.
  • The wholesale and retail prices chart below is Petra Gems' best average estimates based on data of leading diamond suppliers and online retailers.
  • The prices represent round brilliant cut diamonds. For tips on how to calculate the prices of fancy cut stones, see the estimations and suggestions below.
  • The price is for an excellent cut diamond that has none to faint blue fluorescence in each category.
  • The prices apply to a GIA or AGS graded diamonds only.
  • The latest price estimates are from January 2020. It will be updated within 4-5 months if we notice significant price changes in the diamond industry.
  • Compare these prices with this site (site 1) and this site (site 2) right now because they have the best diamond prices online.
  • These are very conservative price averages by Sharif. If the deal is below these prices, consider it a good price.
  • For 3 carat +, especially 4+ carat, contact us so we can compare retail prices and wholesale diamonds in real-time to share more accurate estimates. 

Fancy Cut Diamonds Prices:

Round cut diamonds are generally more expensive than other fancy cut diamonds. It takes a bigger/larger rough diamond to cut it into a round diamond than it does to cut it into a fancy cut diamond such a cushion cut diamond. Below are the best estimates for lower prices of the fancy cut diamonds based on the above price indexes. The demand and supply of each diamond shape as well as surplus inventory in the marketplace also affect these prices.

Beyond the 4Cs:

The prices of diamonds can vary astronomically even if the stones appear similar to the naked eye.

Given that diamonds are among the most valuable gemstones in the world, it is important to ask how are their prices determined, who decide how much they should cost, and most importantly, why do two diamonds with the same grade (4Cs) have different prices? Knowing the answers to these questions will set a pro apart from most buyers. 

In this article, we will explore what determines the value of a diamond and how the different factors affect the final price of a diamond. In addition to the 4Cs, these include:


A certification from a reputable lab is arguably the most important factor in determining the price of a diamond. First and foremost, it will inform the buyer that the diamond is a natural gemstone. With a grading report, we can also confirm the quality of the stone from an unbiased third party. GIA and AGS are the best labs for grading diamonds. 

Physical Appearance:

After confirming the specifications of a diamond in a report, a grading report won’t completely confirm how a stone sparkles. The price of the stone will also be affected by the brilliance of the stone to the naked eye in-person. 

Online vs Local:

Knowing that online stores offer better selection and pricing without compromising on quality is also critically important. Physical stores offer higher prices because they transfer overhead costs to customers.

Diamond Price Chart:

In pricing, diamonds break into two classifications:

●Diamond priced against the Rapaport’s Price List

●Diamonds are not priced against the Rapaport Price List.

The Rapaport Diamond Report of Polished Diamond Prices:

The pricing of polished diamonds is different because they have a set price on the market. Various factors influence the pricing equation, just like setting values for oil and gold. However, the calculation has less to do with the costs of producing polished diamonds and more with market demand.

Martin Rapaport, a Belgian industry broker, along with his team, calculate the price of diamonds. These prices mirror the preset market state of the industry and get published on the Rapaport Diamond Report on weekly basis. This weekly report is available only for premium subscribers.

In the report, the main factors that determine the cost of polished diamonds are three of the 4Cs—cut, carat, color, and clarity.

The Rapaport Report displays a price for a combination of diamond color and clarity, with a weight range of 0.01 to 5.99. Rap prices are usually high, and traders typically use them for reference purposes. In truth, very few sellers strictly follow the prices in the Rap Report.

How to Use RapNet Price List:

To properly understand how to use the RapNet Price List, we will dig deeper into what it is.

What is RapNet?

RapNet is a jewelry trading network powered by Rapaport. The network is selectively available to premium members of the diamond and jewelry trade. This network is the world’s largest and most trusted in the diamond industry.

On this platform, buyers and sellers directly interact without any trading fees or commission charges. Members of the RapNet network have access to more than 1,000,000 diamonds of any shape, clarity, size, and color.

For diamond seller, RapNet offers a platform to source and sell diamonds. The membership for RapNet is $660 annually.

The RapNet Asking Price List:

The RapNet Price List is a presentation of the average and best Asking Prices on the RapNet Diamond Trading Network for certain diamond classes available for sale worldwide.

The prices on RapNet Asking Price List are not just for any diamond but for diamonds with Very Good cut or above-cut quality, Rapaport specification-2, and certified by GIA.

The RapNet Asking price provides a listing for sale for a specific indicated date. The list presents discounts below or above the standard Rapaport Price List.

How does the RapNet Asking Price differ From the Rapaport Pricing List?

Typically, the Rapaport Price List presents the High Cash Asking Price that the global diamond trade uses to find the base value to approximate the prices of a broad range of diamond sizes and qualities. On the flip side, RapNet Asking Price List is the real price sellers ask for specific diamonds.

What’s more—and this is very interesting—RapNet Asking Prices List reveals comprehensive data about discounts and premiums to the standard Rapaport’s Price List.

Even more, RapNet Asking Price List includes different diamond shapes. Rapaport Pricing List offers prices for Round diamonds only.

How to Use RapNet Asking Price List:

To read and calculate the diamond price using the RapNet Asking price list, it is important to be familiar with the chart as shown below. 

A Sample of RapNet Price List:

0.30-0.39 RapNet Best/Average Price (Dates)
D 2,460/2591










E 2166/2569










F 1340/2292










G 1869/2273










H 1343/2379










I 1224/1706










J 1152/1313










K 1136/1216










The table above looks like RapNet Asking Price List which is only accessible to jewelers and dealers.

On the very top of the list is the diamond carat size range, followed by the list and publication dates. Next to them is the price for each diamond and discounts available. The prices are consistently in hundreds.

How to Use RapNet Asking Price List to Calculate value Diamond:

For instance, consider the diamond value highlighted in the chart above.

$2460 represents the best RapNet asking price offer for a Round, D, IF 0.30-0.39 diamond. -45% is the best RapNet asking price available illustrated as Rapaport’s price list.

$2595 shows the RapNet average asking price for the Round diamond and -35 is the RapNet average asking price represented as Rapaport’s Price List discount.

It is important to remember there is a big difference between the Rapaport Price List and RapNet Asking Price List.

Why Companies Do not Offer a Certificate Sometimes?

It is not too common to find a certificate for a diamond with an I1 clarity grade.

Well-established companies rarely sell a GIA certified I1 diamond. They assume that without the certificate, they might be able to sell such diamonds at the same or a higher prices. 

Discount and Premium Prices:

The real work in calculating diamond pricing is judging the discount or premium to the Rap price. Most often, diamond deals are made at a discount of Rap Price. Two diamond dealers will haggle at the Rap Discount point.

However, note that the three Cs of diamond quality on Rap price only brings us the baseline. Things then turn subjective. Factors like Cut, fluorescence, and inclusion quality fades so the discount Rap Price can be determined.

The “20 Below,” or “20 Back,” Rule:

To understand this correctly, consider a diamond with an excellent cut, with a clarity of SI1 and the H color with no fluorescence. This diamond will look precisely like a G and might trade at a -20% or even -15% less than the Rap price for a similar G grade diamond. In the diamond world, such a situation is known as “20 below” or “20 back.”

A jeweler will want to bargain such a diamond at “15 back.” On the other hand, a diamond shopper will desire to acquire it at “20 below.” If we want to calculate the real price, it requires us to subtract the “percentage back” from the Rap Price.

Sweet Spots of Value:

When we take a closer look at the Rapaport Price List, we will see how different prices between adjacent prices in each matrix unfolds. They are not uniform.

For instance, the price difference between a diamond of VS2 clarity, color H, 1 carat, and that of VS2 clarity, color G, 1 carat is $1000. But the price difference of the identical VS2, F, and 1 carat and a 1 carat G VS2 is only $500.

In the diamond world, prices rarely are based on sound reasoning. The pricing process becomes emotional. To help us get through these inconsistencies, we should seek an expert diamond dealer. That way, we can take advantage of sweet spots that are within the pricing grid.

For instance, it costs too much to make an upgrade from H color VS2 clarity to a G color VS2 clarity. It is not worth it as the visible difference is barely noticeable.

The Effect of Rap Prices:

The establishment of Rap prices regulated a diamond’s price manipulation, a piece of a good news for diamond shoppers. But to a diamond dealer who would want to hyper-inflate diamond prices, Rap prices are unprofitable.

What’s more, Rap prices commoditized diamonds. For years the diamond industry marketed diamonds as something of infinite value.

In the first decades after coming up with the Rap Prices, some dealers continued selling diamonds above the Rap prices. But as the diamond market continues to diversify, most retailers sell diamonds around the rap prices.

Limitations of the Rapaport Price:

  1. It only focuses on Color, Clarity, and Carat as certified by GIA. It assumes Cut is of an excellent grade.
  2. Rapaport also does not include Polish and Symmetry
  3. Different Diamonds of the Same Grade can have Different Outlooks

One S12 diamond can be perfectly eye-clean, while the second one might have noticeable flaws. One F colored diamond can appear brilliant while another might be less brilliant because of a strong fluorescence. A diamond that has a brighter appearance sells at a higher price.

  1. The Price is High

Rapaport itself says that the list assumes the highest asking price. Most retailers apply discounts on the Rap Prices. Some diamond dealers show customers the Rapaport chat to convince them that they are getting a fair deal because they are selling below it. 

A Deeper Dive into How to Calculate Diamond Price:

To ensure buyers get the best value for the money, we will go over the factors that affect diamond pricing.

The 4Cs of diamond grading - Carat, Cut, Color, and Clarity - nearly everyone knows about them. However, within these grades are subdivisions, judgment calls, and variation that the Rapaport Diamond report does not list in its grading.

The 4Cs dictate how much a diamond will cost. The more colorless and flawless a diamond is, the more valuable it gets.

But here is what brings everything into perspective:

Save money on Color and Clarity. These factors are usually unnoticeable by the average person or observed by the naked eye. Chances are that what is needed is a diamond that looks eye-clean and colorless. 


Carat has the most significant impact on the price of a diamond. For instance, consider several diamonds with similar color, clarity, and excellent cut.

The price of a diamond directly increases with carat weight. Theoretically, a 0.5-carat diamond will cost double what a 0.4-carat diamond costs. It is a similar case for 0.75 and 1-carat diamond. Big diamonds are scarce, and their prices will reflect that.

However, if we take a closer look, we will see that the most rapid price-shift happens at the half-carat and whole-carat points. And that characteristic presents a loophole in the diamond market to get us more value. Searching for a diamond that’s just slightly under a whole number, e.g., 0.9 instead of 1.0 carat could be a great option for someone with option constraints.

How to Calculate Price Per Carat:

For instance, if one carat costs $2500, a 0.5-carat diamond would cost $1250. We would calculate the price of that carat by multiplying 2500 X 0.5. The per-carat price increases as the weight and the quality increases.

However, we need to consider the other Cs of a diamond - Color, Clarity, and Cut. Additionally, different shapes come at different prices.

It is important to note that when creating a carat comparison, we must compare diamonds with the same certificate, clarity, fluorescence, cut, and color. Furthermore, check out the physical properties of the diamonds. Check on tints, flaws, or haziness.

Diamond is a retail product-driven more by emotion rather than reason. For example, a 0.99-carat diamond only cost 1% more than a 0.98-carat diamond. On the other hand, a 1.00ct diamond cost 20% more than the same 0.99ct diamond. These two diamonds are visually different. Why is that?

Since diamond prices jump rapidly as the carats increase, lots of diamond cutters are under the compulsion to cut a gem that strikes a whole number. Unfortunately, stressing on hitting a whole number carat instead of maximum brilliance results in undesirable diamond characteristics. This leads us to consider the next C—Cut.

Cut (And How it Impacts Diamond Price):

The cut of a diamond is the most significant quality to consider. In fact, whatever comprises we make with the other factors are worth it for an excellent cut.

Here is the reason why:

Diamond’s cut is what defines its brilliance, fire, sparkle, and overall appeal. An ideal cut can create a sparkle that can hide inclusions and mask undesirable colors. And that’s another loophole in the diamond world to find value for money.

But do not confuse diamond’s Cut with a diamond’s shape. The cut is the symmetry, proportion, and polish. On the other hand, the diamond shape is the outline shape of the diamond from the top down.

It is a diamond’s cut that determines how brilliant a diamond is. It defines the angle and how light bounces off each facet. Imperfect diamond cuts leak light resulting in a dull appearing diamond.

An ideally cut diamond has a seamless proportion, perfect symmetry, and excellent polish. Facets and dimensions are purposefully cut to maximize the reflection of internal light.

Aesthetically, cut makes a significant impact on beauty—the better the cut, the more brilliant the diamond. It gives the cut a higher priority in diamond—get the best cut possible. With a perfect cut, we can afford to scale down the other Cs.

What’s more, an ideal cut can make a diamond appear large, and a poor cut can waste the carat weight.

There is even a significant jump between an excellent cut and a super ideal cut.

Diamond’s Color - How Crucial is It?

The diamond color as a significant impact on the overall brilliance of a diamond.

Color is the slight yellow hue in a diamond. The color ranges from D (totally colorless) to Z (yellow/brown tint). However, most retailers do not sell any diamonds less than K.

Totally, colorless diamonds are exponentially rare and thus come at a premium price. Most diamonds have a slight yellow hue, which the naked eye cannot detect.

The price difference from one color to the next is random. But here is the thing:

It is difficult to tell between colorless, and an almost colorless diamond. So, there is no point in splurging on something with no visible difference.

To get the best value for the money, consider going with color H. H is typically viewed as the inflection point between a slightly noticeable hue in a diamond and a colorless diamond. Most people can hardly differentiate between the two.

H is a sure bet. And it is preferable to have a diamond with J color with an excellent cut rather than a Fair grade cut diamond with color H.

Clarity - How Important is It?

The Clarity of a diamond describes the grade of flaws it has. Clarity consists of 2 types:

●Inclusion (internal flaws)

●Blemishes (Flaws on the Surface)

Most diamonds have flaws. What matters most is the visibility and location of the imperfections.

The expensive mistake to make is to assume that it requires a highly graded clarity for a diamond to be eye-clean. But here is some raw honesty about clarity:

Laboratories grade a diamond’s Clarity based on visible flaws under an X10 magnification. In real life, no human eye can examine a diamond in such detail. An imperfection would have to be evident to be visible to a casual observer.

Even if we buy a diamond with the highest clarity grade, we might not be able to appreciate it because it is invisible to the naked eye.

The clarity of VS2 can give the best value for the money.

For instance, if we look at price difference as we move up and down in the clarity grade of a diamond with the same carat, cut, and color, we will notice that internally flawless diamonds are priced higher because they are rare. However, just as with color, it is nearly impossible to appreciate high clarity grade because the difference is not visible to the naked eye.

Remember that even diamonds with identical 4Cs (including clarity) can differ significantly in pricing. This is because of the type of flaw and if the flaw is visible or not. For example, there are SI2 diamonds that are perfectly eye-clean, while they are others with an unappealing black spot in the diamond.

The Pricing Structure of Diamond Differs From those of Other Products:

The pricing structure of the day-to-day products are determined based on the cost of raw materials, labor fees, processing fees, overhead costs, and profit, among others.

The retail price equals the sum of all costs and expenses plus a percentage profit. And the markup differs depending on the brand and the difficulty of distribution.

Diamond prices are undisputedly opposite of the typical pricing system that other products employ. On the surface, it may look straight forward, but it becomes complicated as we dig deeper.

What Dictates the Worth and Price of Rough Diamonds?

The market for the uncut, rough diamond is highly distinguishable from the polished gemstone.

First, diamond preparation and production exceed society’s needs. To be blunt, the supply of diamonds are higher than the demand—diamonds aren’t rare.

In a free market, people expect the prices to drop when the supply exceeds demand. But diamond prices appear to be mysterious.

Mainly the supply is under the regulation of a few producers, companies like De Beers—the diamond giants, ALROSA, and Rio Tinto maintain stable prices by regulating the volume of rough stones obtained in the market at a specific time. These companies also control the mining, processing, and marketing of rough stones.

Even though De Beers doesn’t control the entire rough diamond market, the company has an indisputable impact on the prices of rough diamonds. Initially, De Beers had 85% of the rough diamonds. Today, the company owns 35-40% of all rough diamonds.

De Beers organizes ten sights annually, where they set the prices. During the sight sessions, the company presents several collections of rough diamonds to sight holders. Each compilation is usually from 1-25 million dollars.

How De Beers Controls Diamond Market Value:

For instance, when diamond prices fall, De Beers supplies fewer diamonds to sight holders, thus reducing the volume in supply. Alternatively, it can impose higher rates on the sight holders so they have to consume lower amounts.

Similarly, if a new market emerges, De Beers floods the market with diamonds at a throwaway price, thus offsetting the demand gap. Oddly enough, De Beers is so protective of the diamond market that it has even bought diamonds stolen from its mine to prevent thieves from selling the diamonds below the market price.

Beyond the 4Cs—Additional Factors That Affect Diamond Pricing:

Factors that affect diamond pricing other than the 4Cs include:


Certification is essential, so much that it is often assumed to be the 5th C.

There are tons of diamond grading labs globally, including, GIA, AGS, EGL, and IGI, to name a few. Each of these labs has its grading criteria and standard.

However, GIA and AGS stand out as they have a global reputation in having the highest and the most consistent grading system. For instance, GIA can grade a diamond as SI2 but a different lab-grade it as VS2 clarity. Some certification companies may inflate their quality by as much as 2 whole grades. 

For this reason, GIA and AGS are highly recommended. They’re well known for precision and consistency in their diamond grading system.

However, Diamonds certified by GIA and AGS can cost more by 10 -30% because it is more expensive to receive certification from these companies. No compromise should be made when it comes to certification. 

Where to Buy?

Jeweler’s markup has a significant influence on diamond pricing. The same quality diamond priced many times higher in other places. Preferably, opt to shop online as the prices can cost as much as 50% less than big-name jewelry stores. Low overhead cost is one of several reasons for this disparity in pricing.

The Shape of the Diamond Makes a Difference Too:

Among all diamonds, Round diamonds are the most expensive. Their popularity is because Round diamonds display incredible brilliance, and they are very old diamonds.

Princess cut diamonds are the next most popular shape and the next most expensive because they sparkle the most after the round diamond.

An oval diamond is the modern diamond shape, elegant twist. They are the third most popular after the Princess shape.

Other cuts like pearl Asscher, Emerald, and Marquise are fancy cuts and cost less compared to other diamond shapes.

Choosing a shape other than round and save as much as 20%-40%. Diverting that money towards other factors can be helpful. 

Diamond Fluorescence:

Diamond fluorescence is the soft glow (usually blue) a diamond produces under ultraviolet light. This visual effect is natural in 1/3 of all diamonds in the world.

Frequently, the blue fluorescence doesn’t negatively affect a diamond’s outlook. But since fluorescence appears undesirable to many and can be used to our advantages at times. The blue fluorescence can counteract any yellowish hue that a lower grade diamond may have. Therefore, it may improve the color of diamonds with grade G or lower. Note, that this slight increase in value only holds for blue fluorescence diamonds.

On the flip side, yellow or green fluorescence will always lower diamond prices unless the diamonds are a fancy yellow or green. In such cases, this fluorescence color will make the color appear more saturated, thus, enhancing their value. But generally, fluorescence decreases the value of D-F color grade diamonds but may increase the price of G-J diamonds.

Medium to strong fluorescence can cause the stone to appear milky, thus decreasing its value.

How Diamond Prices Have Changed Over the Years and Why:

As the world’s economy continues to grow, the demand for luxury products increases while diamond mining declines. Which helps contribute to the astronomical prices.

Over the past ten years, prices of diamonds have increased by approximately 32-33%, stating that there has been an average annual price increase of 4%.

Similar to any other product, the price of polished diamonds are driven by various forces. For instance, the price may change because of external factors like underlying economic dynamics and internal factors like traders’ profit margins

Annually, diamond prices fluctuate on a moderate scale, from high to low, by a percentage of 5-7%.

Important Note In Light of COVID-19:

Many buyers are inquiring if the Coronavirus pandemic is bringing down diamond prices drastically. In our opinion, a small number of diamond dealers have slightly lowered their prices (3-5% price decline). This is not an industry-wide decline in price. If shopping, we recommend that you buy a stone during this downturn. Because of demand later this year, and added inflation due to more dollar printing, the prices of commodities, including diamonds, will most probably go higher in the mid-to-long-term. 

The Bottom Line:

Examining the best diamond prices is a critical process for both investors and consumers. The uncommon and alluring gemstone has been around for a long time and it has kept its high value since its discovery. With persistent economic growth, the value of a diamond has grown with it.

There is no magical mathematical formula to calculate the price of a diamond. There is no simple equation to determine the price. Knowing the quality of a diamond can help you determine the price.