The 10.03-carat “Mediterranean Blue” diamond crafted from a rough stone discovered in 2023 at South Africa’s Cullinan mine. Described as “remarkably rare,” this exquisite gem will be a highlight of Sotheby’s jewelry auction in Geneva this May. Let’s dive in to know more about the 10-carat Vivid Blue Diamond that May Sell for $20M.
The Blue Diamond May Sell for $20M
A rare 10.03-carat fancy vivid blue diamond is set to go under the hammer at Sotheby’s. Named “The Mediterranean Blue,”. This exquisite gem will make its auction debut at Sotheby’s High Jewelry sale in Geneva on May 13. With an estimated price of approximately CHF 18 million ($20 million).
Classified as a Type IIb diamond. It holds the highest possible color grade for a blue diamond. Fancy vivid blue as determined by the Gemological Institute of America (GIA). According to the GIA, only 0.3% of all diamonds submitted annually exhibit a predominantly blue hue. And, among those, very few achieve the fancy, vivid grade while exceeding 10 carats.
“Like its namesake, the Mediterranean Blue embodies nature’s timeless beauty. By the expertise of a master cutter, its striking blue hue and mesmerizing brilliance are truly extraordinary,”.
“With its exceptional 10.03-carat weight and placement in the most sought-after fancy color category. The Mediterranean Blue stands as a remarkable example of a rare and prestigious diamond.”
Regarding its cut and shape, Sotheby’s emphasized that colored diamonds require meticulous planning to achieve the ideal balance between size, clarity, and the most vivid face-up color.
Other Details of the 10-Carat Vivid Blue Diamond May Sell $20M
The Mediterranean Blue features a cushion modified brilliant cut, the result of an exacting six-month planning and cutting process.
According to Sotheby’s, its carefully crafted shape enhances its rich saturation, elevating it to a “rarefied category” even among the world’s most exceptional diamonds. Unlike other fancy-colored diamonds, which usually get their color from impurities like nitrogen, blue diamonds owe their unique color to boron.
Where Are Blue Diamonds Found?
The most famous sources of blue diamonds include:
Argyle Mine, Australia – While primarily famous for pink diamonds, the Argyle mine has also yielded some rare blue diamonds.
Cullinan Mine, South Africa – This mine is known for producing some of the world’s finest blue diamonds, including the famous Blue Moon of Josephine and the Hope Diamond.
Golconda Mines, India – Historically, these mines produced legendary diamonds, including the Hope Diamond and Wittelsbach-Graff Diamond before they were depleted.
