Fire opal, Mexico
Fire opal, Mexico
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Dumortierite in rock crystal, Brazil, polarised light
Dumortierite in rock crystal, Brazil, polarised light
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Epigenetic inclusion (probanly melanterite) in quartz, Brazil, crossed polarisers
Inclusions of hematite in feldspar (sunstone), India
Inclusions of hematite in feldspar (sunstone), India
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Colour zoning in ruby from Mong-Shu, Burma
Colour zoning in ruby from Mong-Shu, Burma
Two-phase inclusions in tourmaline from Namibia
Two-phase inclusions in tourmaline from Namibia