Dendritic Opal 3x6mm Faceted Rondelle - 15-16 Inch Table Cut Cube A grade Banded Pietersite is composed of

Pietersite is composed of

It is named for its strikingly beautiful swirling patterns of parallel lines

but unlike rubies

The stone ranges in hue from green

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Dendritic Opal 3x6mm Faceted Rondelle - 15-16 Inch Table Cut Cube A grade Banded Pietersite is composed ofThis 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.