This title is now in paperback for the first time.Artificial gemstones have been well established in the trade for some time, but now, following further refinements in their manufacture, gemmologists worldwide are facing increasing problems with identification.Today, gem-quality synthetic diamonds, [...]

Since it was published in 1962, "Gems" has become universally recognized as the most comprehensive and authoritative treatise on gem materials in the English language. Now in its sixth edition, it has been revised for relevance to today's practice.It includes an expanded encyclopaedic section, and o[...]