Madagascar Dendiritc Green Opal 10mm Round A Grade - 15-16 Inch 6-8x12-25mm or some degree of pink

or some degree of pink in between

while the Zoisite is light to medium green

however they are not currently sourced from that particular region

s attention in the 1890s when a local geologist saw it glimmering in the moonlight and recommended that it be submitted as a representative stone from Norway to the World

There are 2 specimens pictured to show that there are variations in the size and color

Madagascar Dendiritc Green Opal 10mm Round A Grade - 15-16 Inch 6-8x12-25mm or some degree of pinkThis 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.