About Sylvain Goldberg

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So far Sylvain Goldberg has created 394 blog entries.

Spinel: for kings and tsars

Why do you need to know spinel? Because it is perhaps the most underestimated gemstone in the world. It’s been used since

Spinel: for kings and tsars2020-12-29T10:55:22+00:00

Paraiba tourmaline: luminous neon

Why do you need to know Paraiba tourmaline? A very rare tourmaline variety, famous for its paradisiacal blue-green color that almost resembles

Paraiba tourmaline: luminous neon2020-12-29T10:54:52+00:00