<p>Since it was first published in 1962 `Gems', written by Robert Webster and revised in its fourth edition by Basil Anderson, has become universally recognised as the most comprehensive and authoritative treatise on gem materials in the English language</p>

Gems: Their sources, descriptions, and identification

Webster, Robert F.G.A.

Butterworths

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Books by Webster, Robert F.G.A.

See the best price to sell, buy, or rent books by Webster, Robert F.G.A.. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Gems: Their sources, descriptions, and identification