EXCEPTIONAL SHINING CUSHION-SIZED DIAMOND on paper (type IIa - Lot 289

EXCEPTIONAL SHINING CUSHION-SIZED DIAMOND on paper (type IIa) Diamond weight: 5.06 cts It is accompanied by a GIA certificate n°2171179546 dated 2.06.2015, attesting "Cushion Brilliant" cut, D color, IF purity "Internally Flawless". Polished and symmetrical: excellent, fluorecense: nil According to the GIA laboratory report accompanying this diamond, this stone has been identified as a type IIa diamond. Type IIa diamonds are the purest category chemically, and offer the most exceptional optical transparency. Type IIa diamonds were first identified as originating in India (particularly the Golconde region), but have since been found in many of the world's diamond-producing regions. Among the most famous diamonds, the 530.20-carat Cullinan and the 105.60-carat Koh-i-noor are examples of Type IIa diamonds.