4x6 mm Dendritic Opal Table Cut Corner Drilled Cube - 15-16 Inch Moss It was named and first

It was named and first described by the Greek philosopher and botanist Theosphrastus in 315 BCE

greenish yellows

and most commonly found with black inclusions

Cuprite is a copper oxide mineral frequently found in association with copper deposits as well as azurite

sold a piece of Green Tourmaline to Tiffany & Co

4x6 mm Dendritic Opal Table Cut Corner Drilled Cube - 15-16 Inch Moss It was named and firstThis variety of opal is named "dendritic" for the small inclusions within it that resemble moss or ferns. These inclusions consist of iron, manganese and other metallic oxides captured during the forming of the rock. Opals are hydrated amorphous forms of silica, created when silica hardens within the fissures of other stones.