Rare 20.46-carat Okavango Blue Diamond offers peek into unique
South African miner finds five rare blue diamonds
Hope diamond Blue Diamond, 45.52 Carats, Smithsonian Institution
Rare 20-carat blue diamond unveiled in Botswana - ABC News
Largest pink diamond found in 300 years uncovered in Angola
Blue diamonds: the ultimate luxury from South Africa
Rare blue diamond found in Gauteng goes on sale – and could fetch
Where are Diamonds Found? Spotlight on South African Diamonds
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3.78 Ct Natural Big Size Light Blue Color Rough Diamond Uncut
Rare, uncut blue diamond found in South Africa
Diamonds in natural colors - All the rarest ones