trapiche-like pattern observed in a quartz under cross Polarizer

Twin crystal structure in natural Ametrine from brazil-bolivia

Quartz crystal in an Opal from Mexico

Spherical gas bubbles in a lead-glass filled ruby

Numerous gas bubbles resulting from high-temperature heat altered in a Beryllium diffused sapphire

Different shapes of droplets in flux-healed fingerprint of a flux-heated ruby

Needle-like crystals of Rutile in an unheated star sapphire from Mogok, Myanmar

Distinctly recognizable jagged three-phase inclusion in an emerald from Muzo, Colombia

Distinctly recognizable jagged three-phase inclusion in an emerald from Colombia

Three-Phase Inclusions in Afghan Emerald

Resin filled in an emerald from Colombia