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  • Letšeng Mine

  • Lot 596, an impressive 20.27carat, D colour, Flawless clarity, Type IIA diamond, showcases the convergence of natural elements to create the perfect example, sourced from the legendary Letšang mine, fulfills the top criterion of an exceptional diamond.


    Diamond rarity depends on a combination of factors, with subtle differences in colour and clarity dramatically affecting a diamond’s value. Four important factors to describe and classify diamonds are: Colour, Clarity, Cut and Carat Weight. Described as the 4Cs, together they describe the quality of a finished diamond.


    Colour of a diamond can dramatically affect diamond value. When graded at the GIA laboratory, diamonds are colour graded under controlled conditions by comparing them to diamonds of known colour, called masterstones.


    D colour, is the highest colourless diamond grade. Considered by far the rarest and most desirable of the colourless diamond spectrum, D colour diamonds account for a small percentage of all diamonds sold worldwide.


    Clarity, in a diamond, is relative to the presence or absence of inclusions and blemishes. As a natural creation, diamonds generally have natural internal features, called inclusions, as well as surface irregularities, known as blemishes.


    Clarity characteristics are often indicative of a gem created under natural occurrences, which can impact positively or negatively on a diamond’s value. Flawless, is the top grade in the GIA diamond clarity grading system, where a natural diamond under magnification is devoid of visible inclusion or blemishes. It is estimated that Flawless and Internally Flawless diamonds represent less than 0.5% of all natural diamonds mined.


    Type IIA, is a rare subgroup of diamonds, that comprises less than 2% of all gem-quality diamonds. Diamonds in this group are the most chemically pure type of diamond and often possess exceptional optical transparency.


    Letšeng Mine, located in the Maluti Mountains of Lesotho, is renowned for its recovery of large, high quality, exceptional diamonds. One of the world’s highest diamond mine at 3,100 meters above sea level, it has the highest dollar value-per-carat of any diamond mine. Legendary diamonds recovered from the mine include the 550carat “Letšeng Star” and the 493carat “Letšeng Legacy”.


An Exceptional Diamond Ring

- One square emerald-cut diamond, 20.27 carats
- Platinum
- Ring size 6

GIA Report: D colour, Flawless clarity, Excellent Polish and Symmetry
Diamond Type Classification Report: Type IIa diamond


Ring size 6

Full Cataloguing

HK$14,000,000 - 18,000,000 

Sold for HK$15,980,000

Contact Specialist

Charlene Lau
Head of Jewels, Hong Kong
+852 2318 2039
[email protected]

Jewels & Jadeite

Hong Kong Auction 27 November 2021