Midge included in amber from the Baltic coast, polarised light
Colour zoning in ruby from Mong-Shu, Burma
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Two-phase inclusions in sapphire, Sri Lanka
Fluid inclusions in quartz with bituminous daughter minerals, China
Bubbles and swirls in moldavite (natural glass)
Fire opal, Mexico


Schweizerische Gemmologische Gesellschaft
Sekretariat: Willy Bieri

c/o Willy Bieri, Feldgass 34, 6170 Schüpfheim

T. +41 78 696 19 81
E. nfgmmlgch