Fire opal, Mexico
Two-phase inclusions in tourmaline from Namibia
Inclusions of hematite in feldspar (sunstone), India
Spinel crystal in dolomite marble, Burma
Natural etching structure on a crystal face of diamond (trigons), polarised light
Bubbles and swirls in moldavite (natural glass)
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light

Contatti

Società Gemmologica Svizzera
Segretariato : Willy Bieri

c/o Willy Bieri, Feldgass 34, 6170 Schüpfheim

T. +41 78 696 19 81
E. nfgmmlgch