Black Moonstone tumbled

A variety of Black Moonstone

What is Black Moonstone tumbled?

The black Moonstone tumbled is a dark grey, black-colored stone with veins of a peachy sand color. The best quality black Moonstone tumbled is found in Sri Lanka, although there are mines in India, Brazil, and Myanmar. It is liked for its shimmering adularescence. It is made into ornamental spheres, beads, and cabochons.

Optical Properties

Refractive Index
1.518-1.527
Birefringence
0.006-0.007
Pleochroism
None
Optical Character
Biaxial negative
Dispersion
0.012

Black Moonstone tumbled Market Value Calculator

Estimate the market value of Black Moonstone tumbled using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Black Moonstone tumbled Localities Map

See where Black Moonstone tumbled is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Quick Facts

Physical Properties

Streak
White

Chemical Properties

Chemical Formula
(Ca, Na)[Al(Al, Si)Si2O8]
Elements
Al, Ca, Na, O, Si
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