gemstone

Opalite crescent pendant

Opalite (man-made opalescent glass; not a natural mineral)

AI-generated identification · may be incorrect

Translucent milky blue-white body with blue/yellow opalescent flashes, vitreous luster, and no visible crystal structure; typically Mohs hardness about 5–6. It is a shaped, polished pendant with a metal bail.

Identified August 10, 2026More gemstone →

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Physical properties

Formation & geological history

Commercial opalite is commonly produced by melting and cooling silica-based glass with additives, so it has no geological age or natural mineral formation process. It is often marketed misleadingly as “synthetic moonstone.”

Uses & applications

Used primarily in inexpensive jewelry, cabochons, carvings, and ornamental objects; it has little intrinsic gem value compared with natural moonstone or opal.

Geological facts

The even glow, glassy surface, and vivid internal blue coloration are characteristic of manufactured opalite. It should not be confused with natural opal, which is hydrated amorphous silica, or moonstone, which is feldspar.

Field identification & locations

Identification clues include bubble-free or occasionally bubbly glass, smooth molded contours, lack of cleavage, and uniform color zoning; a refractive-index or microscopic examination can confirm glass. Similar-looking natural moonstone generally shows adularescence and feldspar cleavage.