Madagascar Dendiritc Green Opal 10mm Round A Grade - 15-16 Inch Green Quartz Glacierite has a beautiful blue

Glacierite has a beautiful blue color that comes from trace amounts of cobalt and vanadium

it has often been used as a substitute

Jade has been used for tens of thousands of years

Ours is actually a Serpentine

while seamstresses easily create patterns and buttonholes

Madagascar Dendiritc Green Opal 10mm Round A Grade - 15-16 Inch Green Quartz Glacierite has a beautiful blueThis 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.