Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, 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
Stress fissure («sun spangle») in baltic amber
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Dumortierite in rock crystal, Brazil, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Structure in a healing fissure in topaz from Brazil
Structure in a healing fissure in topaz from Brazil
Fire opal, Mexico
Fire opal, Mexico
Two-phase inclusions in tourmaline from Namibia
Two-phase inclusions in tourmaline from Namibia
Colour zoning in ruby from Mong-Shu, Burma
Colour zoning in ruby from Mong-Shu, Burma
 
 

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