Madagascar Dendiritc Green Opal 8mm Round A Grade - 15-16 Inch Green Aventurine (AAA) It sometimes features dark brown

It sometimes features dark brown to black dendritic inclusions that branch like tiny tree limbs through the stone

one of the first fluorescent minerals ever studied

Any noted effects and non-physical uses for the stone are in no way guaranteed or proven by Dakota Stones

but a combination of minerals

Madagascar Dendiritc Green Opal 8mm Round A Grade - 15-16 Inch Green Aventurine (AAA) It sometimes features dark brownThis 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.