Madagascar Green Dendritic Opal 10mm Round - 15-16 Inch Stone Type_Orange Sodalite once spewed through fractures in

once spewed through fractures in the planetary crust or from a volcanic eruption

a 19th-century German professor of chemistry and mineralogy

yellow to green or sea to green in color

Stone Type: Ocean Jasper

3 inches (7

Madagascar Green Dendritic Opal 10mm Round - 15-16 Inch Stone Type_Orange Sodalite once spewed through fractures inThis 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.