Spinel crystal in dolomite marble, Burma
Inclusions of hematite in aquamarine, Tanzania
Structure in a healing fissure in topaz from Brazil
Colour zoning in ruby from Mong-Shu, Burma
Bubbles and swirls in moldavite (natural glass)
Inclusion of apatite in ruby from Tanzania
Two-phase inclusions in tourmaline from Namibia
Fluid inclusions in quartz with bituminous daughter minerals, China

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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