Dendritic Opal 3x6mm Faceted Rondelle - 15-16 Inch R0916 It is also somewhat delicate

It is also somewhat delicate with a hardness ranging from 5-5

however it does not exhibit the play of color seen in precious Opal

Ametrine is quartz that occurs in bands of purple and yellow

colored by carotenoids

intricate patterns of minute black flecks

Dendritic Opal 3x6mm Faceted Rondelle - 15-16 Inch R0916 It is also somewhat delicateThis 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.