Jennifer Leitman Bailey, a gemmologist, jewellery appraiser, and adviser in New York City, points out that an item’s financial value is determined by three key factors: market value, rarity, and ...

A geography teacher found an ancient stone in his backyard garden back in 2020. After reporting his find, he worked to dig up more answers behind its history, and recently found out more details.

Doris Hangartner invites readers of her coffee table book Gem Love Letters to open it randomly and be drawn to the coloured stone that resonates with them most. The Zurich-based gemmologist says ...