Hand cut from dendritic opal, these unique cabochons have a flat back and beveled edges. They range in size from 19 x 10.5 mm to 35.5 x 16.5 mm. They are sold per randomly selected cab. Due to the nature of this stone, some cabochons may have natural pitting.
Also known as "moss opal" and "merlinite", dendritic opal is classified as a common opal. It features fern, moss, or tree-like patterned inclusions (referred to as dendrites) of metallic oxides like manganese and iron, which give it its name. It generally is milk white in color with black or grey patterns, but it can also appear yellow, blue, or brown in color.
Family: Opal (common)
Mohs scale: 5.5-6
Locality: Mexico, Australia, and the USA. Smaller deposits can also be found in other countries.