Fire opal, Mexico
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Two-phase inclusion in amethyst, Brazil
Inclusions of chrysotile fibres in demantoide garnet from Ural Mountains, Russia
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Bubbles and swirls in moldavite (natural glass)
Dendrites in agate
Inclusions of hematite in feldspar (sunstone), India

Kontakt

Schweizerische Gemmologische Gesellschaft
Sekretariat: Willy Bieri

c/o Willy Bieri, Feldgass 34, 6170 Schüpfheim

T. +41 78 696 19 81
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