Bubbles and swirls in moldavite (natural glass)
Fluid inclusions in quartz with bituminous daughter minerals, China
Dumortierite in rock crystal, Brazil, polarised light
Inclusion of apatite in ruby from Tanzania
Spinel crystal in dolomite marble, Burma
Inclusions of fossil plant debris in opal from Wollo, Ethiopia
Stress fissure («sun spangle») in baltic amber
Twin-crystal of chrysoberyl

Contact

Swiss Gemmological Society
Secretary: Willy Bieri

c/o Willy Bieri, Feldgass 34, 6170 Schüpfheim

T. +41 78 696 19 81
E. nfgmmlgch