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meaning it forms by replacing another mineral’s crystal structure atom by atom with its own crystal structure
Bead Scoop
The different colored zones in the stone result from different oxidation states of iron
Biotite was named in honor of the French physicist Jean-Baptiste Biot
Madagascar Dendiritc Green Opal 6mm Round A Grade - 15-16 Inch FEATURE04142022 meaning it forms by replacingThis 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.
