| Registros del 1 al 2 de 2 encontrados |
1.- AN UPDATE ON IMPERIAL TOPAZ FROM THE CAPAO MINE, MINAS GERAIS, BRAZIL
GEMOLOGICAL INSTITUTE OF AMERICA; SANTA MONICA, CA; USA; UNITED STATES, 1996
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2.- Dyed purple hydrophane opal
Gemological Institute of America; Santa Monica, CA; USA; United States, 2011
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