For every 10,000 gem-quality diamonds found, only one possesses brilliant and coveted colour. Captivating and enigmatic, blue diamonds are considered the rarest of them all. A fabulous fluke of nature, a blue diamond is produced by the random presence of the atomic lattice-bound trace element boron within the stone’s carbon structure during its formation deep in the earth’s core. The earliest known blue diamond came from the legendary Kollur mine in the Golconda, a region of India that produced such famous examples as the Idol’s Eye (15th century) and the Hope Diamond (17th century), perhaps the most fabled gemstone on the planet. Today, blue diamond discoveries are still sporadic and always astonishing occurrences. This spring in Sotheby’s Magnificent Jewels and Noble Jewels auction (15 May, Geneva), The Farnese Blue – a 6.16-carat blue diamond which has subsequently passed down through four of the most important royal families in Europe: Spain, France, Italy and Austria – will appear on the market for the first time. Ahead of the auction, revisit some of the other exceptional blue diamonds sold at Sotheby’s in recent years.
The Magnificent Jewels and Noble Jewels auction in Geneva on 15 May will feature an array of signed jewels from prominent designers and jewellery makers, together with remarkable precious stones and antique jewellery. The lots will be on view in New York from 13-17th April. Click ahead to see some of the highlights which will be on display. Magnificent Jewels And Noble Jewels 15 May 2018 | Geneva
Two highlights from Sotheby’s Magnificent Jewels and Noble Jewels sale in Geneva on 15 May will be a pair of highly impressive white diamonds, each weighing over 50 carats. Both of the diamonds have Flawless clarity, are D-Colour – the most coveted hue for white diamonds – and belong to the highly rarefied sub-category of Type IIa diamonds, which make up just 2% of gem diamonds and boast the highest optical transparency. The first is a 51.71-carat round, brilliant cut diamond, and the second, similarly perfect, weighs 50.39 carats but is oval. They are both the second largest D Flawless diamond of their shape ever to have come to auction.
Earlier this year to celebrate the first anniversary of its New Bond Street salon, Sotheby’s Diamonds unveiled an exceptionally rare 102.34-carat, white diamond - and the stone has now found a buyer. The only known round brilliant-cut diamond over 100 carats that is perfect according to every critical criterion, the stone was purchased for a price per carat, which far exceeds that for any colourless diamond sold at auction. Click ahead to find out more about the diamond.
Billions of years in the making, diamonds are one of nature’s most wondrous and precious gifts. After being formed in the earth under immense pressure and heat, precise cutting and polishing bring out their incomparable beauty. While one could feast her eyes on beautiful diamonds at virtually any jewelry store, only the most perfect ones – think 100-plus carats and incredibly rare colors – reach stratospheric prices at auction. To pay tribute to April's birthstone, we take a look at 21 breathtaking diamonds that have come to Sotheby’s, including the CTF Pink Star, which set a world auction record for any diamond or jewel. –Stephanie Sporn Magnificent Jewels 18 April | New York Magnificent Jewels & Noble Jewels 15 May | Geneva
To celebrate two of the largest, purest white diamonds ever to come to auction, Sotheby’s takes a look at the art of diamond cutting - the process of sculpting a rough diamond and transforming it into a polished diamond. To find a rough diamond that allows the cutter to end up with a stone over 50 carats is a very rare discovery and to cut a perfect diamond over 50 carats is truly a masterpiece of both nature and man. The diamonds will be offered in the Magnificent Jewels and Noble Jewels sale (Geneva, 15 May).
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