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Gemology

Diamonds Sapphire Star Sapphires Diamond Types Ammolite Quartz Diamond Characteristics Tourmaline Amethyst Emerald Formation

Myanmar Unveils 11,000-Carat Ruby, Said to Be Second-Largest Found There

The public reveal spotlights the stakes of Myanmar’s ruby trade during ongoing conflict.

142-Kilogram Emerald ‘SELENA’ Heads to Auction With R$ 79.8 Million Opening Price

‘Star of Pure Land’ Purple Star Sapphire Unveiled in Sri Lanka After GIA Certification

Colombo Unveils 3,563-Carat 'Star of Pure Land,' Largest Documented Purple Star Sapphire

Sri Lanka Unveils 3,563-Carat Purple Star Sapphire Claimed as Largest of Its Kind

Study Pinpoints Nanoscale Structure Behind Ammolite's Vivid Colors

R$2 Billion Bahia Emerald Kept in São Paulo Bunker as Auction Draws Slow Interest

2.71-Carat Diamond Found by Indiana Visitor at Arkansas’ Crater of Diamonds

Oklahoma Family Finds 2.79-Carat Brown Diamond at Arkansas’ Crater of Diamonds