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 ..
Very rare crystal from rare locality, this complex crystal has gemmy reddish purple tips, was mined ..