Madagascar Green Dendritic Opal 8mm Round - 15-16 Inch Mala Golden Obsidian is a naturally

Golden Obsidian is a naturally occurring volcanic glass

Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue/black color and pattern that resembles porcelain

Moonstone is a Feldspar mineral that was used in Roman jewelry nearly 2

rich greens

Delicate veining

Madagascar Green Dendritic Opal 8mm Round - 15-16 Inch Mala Golden Obsidian is a naturallyThis 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.