Inclusions of hematite in feldspar (sunstone), India
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Stress fissure («sun spangle») in baltic amber
Inclusions of hematite in aquamarine, Tanzania
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Midge included in amber from the Baltic coast, polarised light
Fluid inclusions in quartz with bituminous daughter minerals, China
Agate from Reichweiler, Germany

Contatti

Società Gemmologica Svizzera
Segretariato : Willy Bieri

c/o Willy Bieri, Feldgass 34, 6170 Schüpfheim

T. +41 78 696 19 81
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