ANGOLO VETUSTO

EARTH STONES

by
Dalla Stella Federico

Minerals and Gems, let’s discover them together

Characteristics, features, and many methods to identify minerals

Black Precious Opal, Lightning Ridge, Australia

Precious Opal: The Magic of Play of Color

Learn all about the noble opals of Ethiopia and Australia: formation, structure, play of color, hydrophane differences, patterns, and processing techniques.

Opal

Dalla Stella Federico

Oct 177 min read

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