This amethyst stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. The gemstone is tra...

This amethyst stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. The gemstone is tra...

This amethyst stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. The gemstone is tra...

A nicely banded cross section of an amethyst stalactite crystal from Southern Paraná Basalt Basin, Artigas, Uruguay   Gem translucent slice with de...

This amethyst stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. The gemstone is tra...

This amethyst stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. The gemstone is tra...

This amethyst stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. The gemstone is tra...

This amethyst stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. The gemstone is tra...

This amethyst stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. The gemstone is tra...

This amethyst stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. The gemstone is tra...

This amethyst stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. The gemstone is tra...

A beautiful classic specimen of lustrous Thunder Bay amethyst with rich inclusions  of brick red hematite. Distinctive solid even brick red color t...

Transparent purple fluorite crystals with minor hemimorphite crystal matrix. The crystal is externally unblemished, and only one internal flaw, oth...

Large 2.5 inch metallic lustrous cubic Spanish Pyrite crystal on matrix. This specimen has sharp, well-defined terminations where the crystal faces...

From Nuristan, Laghman Province, Afghanistan This excellent, Manganotantalite is rare find. Most of the crystal appears to be black, but the "glow"...

Hand-polished free-form of natural AAA-quality gem transparent Pink Rose Quartz from Madagascar. All sides are hand-polished to a smooth, mirrored ...

 from Elmwood Mine, Carthage, Smith County, Tennessee   Transparent 3d cubic transparent purple fluorite crystals overgrown atop a cluster of metal...

from De Ann Mine, Jiangxi, China Superb cabinet sized specimen of gem translucent purple dodecahedron fluorite cluster ecthed from Quartz matrix. D...

Translucent cubic purple fluorite crystal overgrown on top of a clear quartz crystals.The fluorite surfaces are composed of smaller parallel crysta...

Translucent cubic purple fluorite crystal overgrown on top of a clear quartz crystals. The fluorite surfaces are composed of smaller parallel cryst...

Translucent cubic purple fluorite crystal overgrown on top of a clear quartz crystals.The fluorite surfaces are composed of smaller parallel crysta...

Transparent 3d cubic purple fluorite crystals overgrown atop a cluster of lustrous sphalerite crystals . on matrix. The fluorite has rich purple zo...

From Greenlaws Mine, Victoria Flatt, Weardale, County Durham, England Lustrous transparent-to-translucent purple-gray cubic fluorite crystals. The ...

From Minggang Mine, Henan Province, China Large well defined cubic formation of fluorite crystals with crystal faces composed of smaller sub-parall...