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Schweizerische Gemmologische Gesellschaft
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Structure in a healing fissure in topaz from Brazil
Colour zoning in ruby from Mong-Shu, Burma
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Fluid inclusions in quartz with bituminous daughter minerals, China
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Dumortierite in rock crystal, Brazil, polarised light
Inclusion of apatite in ruby from Tanzania
Dendrites in agate

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© SGG/SSG 2021

 

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