COLOMBO (News 1st); The national Gem and Jewelry Authority says that World’s largest single natural corundum (Blue Sapphire) has been found in Ratnapura in Sri Lanka. The Blue Sapphire has been discovered as a single crystal, named “Queen of Asia”, and weighs 310kg. The Chairman of the National Gem and Jewelery Authority, Thilak Weerasinghe stated that […]
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