Stress fissure («sun spangle») in baltic amber
Two-phase inclusion in amethyst, Brazil
Two-phase inclusions in sapphire, Sri Lanka
Fluid inclusions in quartz with bituminous daughter minerals, China
Spinel crystal in dolomite marble, Burma
Partially etched diamond crystal
Inclusions of gilalite aggregates in rock crystal from Brazil
Twin-crystal of chrysoberyl

Contact

Societé Suisse de Gemmologie
Sekretariat: Willy Bieri

c/o Willy Bieri, Feldgass 34, 6170 Schüpfheim

T. +41 78 696 19 81
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