Colour zoning in ruby from Mong-Shu, Burma
Stress fissure («sun spangle») in baltic amber
Two-phase inclusions in tourmaline from Namibia
Natural etching structure on a crystal face of diamond (trigons), polarised light
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Two-phase inclusions in sapphire, Sri Lanka
Inclusion of apatite in ruby from Tanzania
Midge included in amber from the Baltic coast, polarised light

Zone interne

Cette zone est disponible uniquement aux membres.