Purple Dendritic Opal 8mm Round - 15-16 Inch Lapis Lazuli browns and grays are reminiscent

browns and grays are reminiscent of a rainforest

Moss Agate is a variety of Chalcedony

creating veins and mottling that ranges in color from rust to black

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Purple Dendritic Opal 8mm Round - 15-16 Inch Lapis Lazuli browns and grays are reminiscentThis 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.