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A field guide in colour to minerals, rocks and precious stones / by Bauer, Jaroslav

Published 1990

Color encyclopedia of gemstones / by Arem, Joel E. 1943-

Published 1987

Dictionary of gemmology / by Read, P. G.

Published 1982

Dictionary of gemmology / by Read, Peter G.

Published 1988

Gems : their sources, descriptions and indentification / by Webster, Robert

Published 1983

Gemstones / by O'Donoghue, Michael

Published 1988

Gemstones and their origins / by Keller, Peter C., 1947-

Published 1990

Geology of world gem deposits /

Published 1985

Handbook of rocks, minerals, and gemstones / by Schumann, Walter

Published 1993

Opals and sapphires : how to work, mine, class, cut, polish and sell them / by Idriess, Ion Llewellyn, 1890-

Published 1967

Prospectors' guide to gemstones in Australia / by Perry, R.

Published 1982

Riches of the earth ornamental and semiprecious stones by Anderson, Frank J., 1912-

Published 1981

The true book about diamonds / by Bruton, Eric

Published 1961

VNR color dictionary of minerals & gemstones /

Published 1982