Tag Archives: Guildhall Color Diamond Advisor

PETRA DIAMONDS UNVEILS SUPER BLUE
Jun
19
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Petra Diamonds Unveils Super Blue

By   guildhalladmin   |   Tags: ,   |   Category: The Guildhall Color Diamond Advisor, Trending

A 122.53 carat blue piece of rough was unveiled at Petra Diamonds this week. The Cullilan Mine is one of the oldest mines in South Africa being in operation for 111...

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