Opal identification and value

Downing, Paul B., Ph.D.

Opal identification and value / by Paul B. Downing - Tallahassee, FL : Majestic Press , 1992. - x, 210 p. : ill. (some col.) ; 24 cm.

Includes bibliographical references (p. [195]-200) and index.

9780962531125

95230997


Opals

553.8 DOW

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