Pearl, Richard M., 1913- Gems, minerals, crystals, and ores : the collector's encyclopedia / by Richard M. Pearl - New York : Odyssey Press, 1964 - 320 p. : ill., plates ; 23 cm. Includes index ISBN: USD 6.95 Subjects--Topical Terms: Precious stonesMineralogyCrystalsGem cutting Dewey Class. No.: 549