Striking natural chevron color zoning in rare amethyst from Nigeria. Very fine object of art...
Oval with deep Siberian color, from Jalingo, Nigeria, a rare locality. These Amethyst have ..
Bright cushion with excellent color, characteristic tiny silver metallic threads of hematit..
From the collection of Dave Daniel, a long time client of Colorado Gem and Mineral Co, comes for ..
Siberian color (deep reddish purple) drop shape with step cut, clean to the eye, tiny multicolore..
Very rare crystal from rare locality, this complex crystal has gemmy reddish purple tips, was mined ..