Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Colour zoning in ruby from Mong-Shu, Burma
Agate from Reichweiler, Germany
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, parallel polarisers
Inclusions of anatase crystal and rutile fibres in rock crystal from Brazil
Inclusion of apatite in ruby from Tanzania
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Stress fissure («sun spangle») in baltic amber


Swiss Gemmological Society
Secretary: Iva Pavic

c/o Iva Pavic, Heerenschürlistrasse 4, 8051 Zürich

T. +41 78 720 98 54
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