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Initially, the Golden Jubilee was a 755.5 carats large
 brown diamond. When the diamond was discovered in Premier Mines's prolific blue
 ground region, it did not attract significant media attention. Years later,
 the diamond was still largely hidden from the outside world. But in 1990,
 processing works on the diamond commenced. De Beers, the company that
 operated Premier Mines, oversaw the cutting process. However, there was one
 monumental challenge. The diamond featured a large surface and visible cracks
 from its inside. Besides, the numerous inclusions that the stone had affected
 its quality and difficulties presented in cutting it.

It was time for De Beers to explore some of the
 cutting-edge diamond-cutting tools and techniques the company had developed for
 years. These tools and methods were developed to cut the&nbsp;<a href="https://www.petragems.com/education/colorless-diamonds-d-e-f-color/">colorless</a>, flawless,
 273.85 carats D-color Centenary Diamond. Eventually, De Beers hired Gabriel
 Tolkowsky to help with the cutting work. It allowed Gabriel
 Tolkowsky to test these techniques and prove their viability.

The many cracks and inclusions in the diamond made it hard
 to cut the stone in the open due to lighting and vibration challenges. An idea
 to construct an underground room was deliberated. The room was free from
 vibrations, making it easier to control the lighting conditions.

In 1990, the stone was successfully reduced to 545.65
 carats, down from the original 755.50 carats. Upon cutting the Golden Jubilee
 Diamond, Mr. Tolkowsky described the cut as a “Fire-Rose cushion shape.”

The Thai Diamond Manufacturers Association then brought the
 diamond to Thailand for display at the Thai Board of Investment Exhibition in
 Laem Chabang. The diamond was chosen to mark the centennial celebrations of De
 Beers in 1988.

In 1995, a group of Thai investors led by Henry Ho
 purchased the diamond from De Beers. Henry Ho was not only fascinated by the
 fire and brilliance of this gem; he also observed that it was quite heavy. In
 an interview with the Natural Color Diamond Association, Henry Ho compared the
 size of the diamond to two chickens. Therefore, a lot more to the diamond made
 investing in it worth the risk.

Arrangements were made for the gem to be offered to King
 Bhumibol as a gift from his subjects. The king was due to celebrate the 50th
 anniversary of his ascent to the throne, which is how the diamond earned the
 name Golden Jubilee.

In 2000, the King’s daughter, Princess Maha Chakri
 Sirindhorn, received the diamond on her father’s behalf. The Thai government had gone through years of economic austerity when purchasing the diamond. Citizens were very conscious of the government’s spending policies.
 A massive investment like this, whose value was more sentimental than
 practical, would raise a few questions. Therefore, information on the actual
 cost of the Golden Jubilee Diamond was largely unavailable. At some point, the
 Thai government reported the diamond as a large topaz to keep its real value
 secret.

The Golden Jubilee Diamond is presently on display at the
 Royal Museum, located within the Pimammek Golden Temple Throne.

History

The Golden Jubilee Diamond has made it to some of the
 world’s most famous public exhibitions and private jewelry outlets, the most
 notable being the Jewelry Trade Center, a 59-story building located in Bangkok.
 The diamond has also been exhibited at the Central Department Store in
 LatPhrao, Bangkok.

Exhibitions outside of
 Bangkok include:

<ol start="1" type="1">
 <li class="MsoNormal">Basel,
 Switzerland</li>
 <li class="MsoNormal">Warren
 Buffet-owned Borsheims Jewelers, Nebraska, USA</li>
 <li class="MsoNormal">Gleim's
 Jewelers, California, USA</li>
</ol>

Besides these historical exhibitions, confident prominent
 global leaders have also handled the diamond. Pope John Paul II received the
 diamond in the Vatican City to give it papal blessings. Other religious leaders
 who have received the diamond, ostensibly to bless it, include the Islamic
 Chularatchamontri and the Buddhist Supreme Patriarch of Thailand.

The Golden Jubilee Diamond is currently priced between four
 and twelve million dollars—the value could be higher if it were to be sold at
 an auction. Moreover, the fact that it is held as one of the royal gifts could
 further raise its value.

The Golden Jubilee Diamond boasts a history
 characterized by royal glamor. Though it is exhibited at Bangkok's Royal
 Museum, the diamond has traveled the world and graced many exhibitions.
 Interestingly, it still holds the title of being the world’s largest-cut diamond.

Value and Popularity

The Golden Jubilee Diamond is the world's largest cut and
        faceted diamond, weighing 545.67 or 109.13 g.

Before we proceed, it is necessary to clarify a

Golden Jubilee: world's largest cut & faceted diamond