One these sold for over $30 Million USD…

According to the International Gem Society, large, gem-quality rubies can be more valuable than comparably sized diamonds and are certainly…

Discovering Enamel

A powdered glassy substance colored by metal oxides, which is melted onto a metallic surface aided by alkaline FLUX. (read: a flowing or flow)Enamel was in use by the second millennium BCE on gold and silver, and later also on copper.

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