"SOLITARY" RING Round old-cut diamond, platinum...

Lot 71
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50 000 - 75 000 EUR
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Result : 156 000 EUR

"SOLITARY" RING Round old-cut diamond, platinum...

"SOLITARY" RING Round old-cut
diamond, platinum (950)
Pb:4.5 gr - Td:55
Accompanied by an LFG certificate N°363951 attesting:
Weight: 5.51 cts
Colour: D Purity: VS2
Fluorescence: None - Type IIa # lot visible by appointment
A diamond and platinum ring.

HISTORICAL GOLDHOUSE Scientists classify diamonds into two main "types", type I and type II, depending on whether or not they contain nitrogen atoms as a replacement for carbon atoms in their atomic structure.
In Type II diamonds, there is no nitrogen detected in infrared spectrometry, i. e. they are diamonds of high chemical purity, with a perfect atomic structure.
Type II is divided into two groups: type IIa diamonds, very rare, (only 0.8% of diamonds belong to this group) are generally colourless, brown or pink, it is possible to find them in the deposits of Brazil, South Africa or Lesotho. Type IIb diamonds (containing boron) are extremely rare and vary in colour from blue to blue grey.

Most of Golconde's diamonds belong to this type IIa. This type of diamond is referred to as "characteristic water" because it is very pure and has a sub-metallic brilliance.
According to the LFG (French Gemmology Laboratory) a "Golconde" type diamond is a type IIa diamond, D-E-F color and pure purity at VVS, (very very small inclusion(s))*.
In addition to these characteristics, the only diamonds that can obtain this designation at the LFG are important (greater than 5 ct) and old-cut diamonds (small table, high crown height, open cut).

Golconde diamonds, or the mythical origin par excellence of the most beautiful diamonds in the world.

The most famous historical diamonds would come from the mythical kingdom of Golconde: the blue diamond of Louis XIV, the Sancy, the Regent, but also the Koh-I-Noor, the Darya-I-Noor, the Shah, the Agra diamond, the eye of the Idole and many others...

From antiquity to the 18th century, India was the world's largest diamond producer (Borneo being modestly known as a second source). The former Golconde fort (located in India, on the basalt plateau of the Deccan, about ten kilometres west of Hyderabad, in the current state of Telangana) was home to the Qutb Shahi dynasty, whose sublime mausoleums can still be visited. For several centuries, the Golconde citadel was the nerve centre of the diamond trade: diamonds from nearby mines were cut, polished and sold in the "gem garden". It is from this region that Jean-Baptiste Tavernier brought back twenty of his most beautiful diamonds to King Louis XIV, including the famous Bleu de

The diamond wealth of this region was highly coveted, particularly during the Mogul Empire (1526). The Islamic Sultanate of the Qutb Shahi died out in 1687, during the conquest of the Deccan by the sixth and last Grand Mogul Aurangzeb (1618-1707). The legendary Golconde mines then became the wealth of the Hyderabad Nizams who administered the region until it became part of India's independence in 1948.

By Capucine JUNCKER gemmologist and journalist, creator of the site Property of a Lady *

Note the diamond we currently offer has a purity VS2 mainly due to chips that are therefore external inclusions to the stone.
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