Blue Moonstone 8x14-16mm Faceted Wheel - 15-16 Inch Focals & Cabs This variety of opal is

This variety of opal is named "dendritic" for the small inclusions within it that resemble moss or ferns

and the Nuclear Regulatory Commission has stated that they are safe to handle and wear

This lava rolled across the landscape

which may form green stains or specks on Azurite crystals or aggregates

blue-greens and greens swirled with yellow-green

Blue Moonstone 8x14-16mm Faceted Wheel - 15-16 Inch Focals & Cabs This variety of opal isMoonstone naturally occurs in a broad spectrum of colors, but is most commonly associated with white, gray and peach. It's soft chatoyancy is reminiscent of the moon's light. Metaphysically, Moonstone is said to increase intuition.