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...

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

From Nasik District, Maharashtra, India Lustrous transparent-to-translucent colorless elongated scolecite crystals in a spray-shaped formation. The...

From Nasik District, Maharashtra, India Lustrous transparent-to-translucent colorless elongated scolecite crystals in a spray-shaped formation. The...

From Nasik District, Maharashtra, India Lustrous transparent-to-translucent colorless elongated scolecite crystals in a spray-shaped formation. The...

From Nasik District, Maharashtra, India Lustrous transparent-to-translucent colorless elongated scolecite crystals in a spray-shaped formation. The...

From Nasik District, Maharashtra, India Lustrous transparent-to-translucent colorless elongated scolecite crystals in a spray-shaped formation. The...

Lustrous rich translucent green cubic halite crystals on matrix.     Weight: 1.85 lbs, Dimensions: 8 x 3.5 x 3.5 inches

An exquisite, pristine formation of Ram’s Horns calcite, hard to find and very rare. It is a complete floater in perfect condition.    Weight: 1.4 ...

Trilobites, an early arthropod relative of spiders, horseshoe crabs, and scorpions, preserved in this level of detail only occurred as a result of ...

Trilobites, an early arthropod relative of spiders, horseshoe crabs, and scorpions, preserved in this level of detail only occurred as a result of ...

Classic specimen of yellow-metallic pyrite crystals to perched on rounded groups of specular dark red sphalerite crystals. This undamaged specimen ...

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

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

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 Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...