Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Inclusions of hematite in feldspar (sunstone), India
Colour zoning in ruby from Mong-Shu, Burma
Fire opal, Mexico
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Bubbles and swirls in moldavite (natural glass)
Two-phase inclusions in sapphire, Sri Lanka
Agate from Anzi, Maroc

Kontakt

Schweizerische Gemmologische Gesellschaft
Sekretariat: Willy Bieri

c/o Willy Bieri, Feldgass 34, 6170 Schüpfheim

T. +41 78 696 19 81
E. nfgmmlgch