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The Rock is a 228.31-carat white diamond which has been graded by the Gemological Institute of America. It has G color, VS1 clarity. [1] The color of white diamonds can range from D to Z: D-color is the highest grade for white diamonds, and it is the rarest and most expensive. The Rock is G-color, which is the fourth whitest level of white ...
The main stone, named the Graff Lesedi La Rona, is the world's largest emerald-cut diamond. It is a D-color (totally colorless), high-clarity stone weighing 302.37 carats (60.474 g; 2.1332 oz). According to Graff, the stone is the "largest highest clarity, highest color diamond ever graded by the Gemological Institute of America (GIA)". The ...
A clarity grade is assigned based on the overall appearance of the stone under ten times magnification, which is the standard magnification for loupes used in the gem world. Most inclusions present in gem-quality diamonds do not affect the diamonds' performance or structural integrity and are not visible to the naked eyes.
A cushion-shaped diamond set into a pendant with a 0.75ct Argyle pink diamond, and 4.5 carats of Argyle pinks. The stone has been given a name to fit its history, rarity and setting – the Fortuna Diamond. Classified as a Type 2A [24] with a colour grade of I and clarity grade of VVS2. [25] —
Cullinan I was surpassed as the world's largest cut diamond by the 545.67-carat (109.134 g) brown Golden Jubilee Diamond in 1992, [35] but remains the largest colourless cut diamond in the world. [36] In terms of clarity, it has a few tiny cleavages and a small patch of graining. The 5.89 cm × 4.54 cm × 2.77 cm (2.32 in × 1.79 in × 1.09 in ...
It is, on the Gemological Institute of America (GIA) color and clarity scales, a D grade (colorless to the highest grade), IF (Internally Flawless, flawless to the second highest grade) diamond (in short: a DIF or a DIF diamond) and the largest DIF ever graded at the GIA; and it is of type IIa (as determined by the Gübelin Gem Lab of Lucerne ...
The Moussaieff Red Diamond (formerly known as the Red Shield Diamond) is a diamond measuring 5.11 carats (1.022 g) with a triangular brilliant cut (sometimes called a trillion or a trilliant cut), rated in color as Fancy Red by the Gemological Institute of America. It is the world's largest known red diamond, the rarest of all diamond colors.
The stone was cut by a team of 35 using computer-controlled lasers into 26 D-flawless diamonds totaling 223.35 carats (44.670 g), the highest yield from a single diamond. [ 17 ] [ 18 ] The Wittelsbach-Graff Diamond is a 31.06-carat (6.212 g) fancy deep-blue diamond with internally flawless clarity purchased by Laurence Graff in 2008 for £16.4 ...