OPALITE

This is a natural untreated stone mined in west Australia.

it has dendritic inclusion which are fern like growths from manganese or iron oxides. High luster.

Opalite is an opalized volcanic tuff or ash that may occur with common opal and agate. It may be dendritic. The key distinction between opalite
and common opal is that opalite is very hard; specimens of opalite
saw or chip with difficulty, whereas opal is commonly glassy and
chips easily Opalite may have a wet appearance upon breaking fresh
specimens creating the illusion of opal. Because of its hardness,
opalite will commonly be found in pronounced outcrops or ridges
while common opal outcrops form muddy, rolling hills or colored soil (laterites?). Common opal fractures readily into tiny crumbs upon
hitting with a rock hammer and opalite does not.

Opalite probably has a hardness of five to six. Opalite appears to decompose into sand, while common opal appears to decompose into a clay or mud (expansive clay). Opalite is associated with deep beds of volcanic ash or welded ash flow tuff, so it may occur with deposits of fossil palm root, palm wood, and bog . Opalite is often associated with moss agate and plume agate. Opalite can be a variety of colors, including white, tan, brown, green, and peach. Opal has a brittle fracture to it, while opalite does not exhibit this property.