Colour zoning in ruby from Mong-Shu, Burma
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Midge included in amber from the Baltic coast, polarised light
Two-phase inclusion in amethyst, Brazil
Inclusion of apatite in ruby from Tanzania
Structure in a healing fissure in topaz from Brazil
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania

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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