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Gemstones · Beryl
Emerald
Hardness says it is fine for a ring; toughness and fracture filling say otherwise. The gap between those two answers is why this page exists.
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Gems, metals and the law that governs how they are marked. Every figure here traces to a named primary source with a pinpoint locator — and where we could not reach one, the cell is left blank rather than filled in.

Hardness says it is fine for a ring; toughness and fracture filling say otherwise. The gap between those two answers is why this page exists.
Read the full entry →