Madagascar Green Dendritic Opal 6mm Round - 15-16 InchThis 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.

It ranges from almost completely transparent to an almost opaque brownish to gray crystal

shiny black with a golden sheen

Larimar is a translucent blue

and Rutile as well

Selenite is a crystal formed from the mineral gypsum

green and brown to the more rare violet and pink

Creativity

but is also said that it can enliven and promote happiness

worshipped by the Incas

the others being Diamond

com originate in the Philippines or Indonesia

check out The Identification of Zachery Treated Turquoise