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Schweizerische Gemmologische Gesellschaft
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Spinel crystal in dolomite marble, Burma
Dendrites in agate
«Red fox agate» from Patagonia, Argentina
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Inclusion of apatite in ruby from Tanzania
Two-phase inclusion in amethyst, Brazil
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Fluid inclusions in quartz with bituminous daughter minerals, China

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  • Gemmology
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    • Terminology
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    • Colours
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© SGG/SSG 2019

 

Our sponsors for 2019:

 
 
 
 
System Eickhorst
 
 
FAERBER
 
 
FERRARI
 
 
System Eickhorst
 
 
GRS
 
 
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Wild & Petsch
 
 
 
 
Christian Dunaigre
 
 
 
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