mineral
Moonstone (or Synthetic Opalite Glass)
Orthoclase Feldspar (KAlSi3O8) or Synthetic Opalite Glass
AI-generated identification · may be incorrectHardness 6.0–6.5 (if feldspar) or 5.5 (if glass); bluish-white opalescence, vitreous to pearly luster, translucent.
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Physical properties
Hardness 6.0–6.5 (if feldspar) or 5.5 (if glass); bluish-white opalescence, vitreous to pearly luster, translucent.
Formation & geological history
Formed in felsic igneous pegmatites or hydrothermal veins through exsolution of albite lamellae within orthoclase.
Uses & applications
Predominantly faceted or cut into cabochons for jewelry, ornamental carving, and metaphysical collections.
Geological facts
Adularescence results from alternating micro-layers that scatter incoming light in a phenomenon known as Rayleigh scattering.
Field identification & locations
Identify by characteristic glowing blue or white shimmer beneath the surface; not native to East Anglia (52.0°N, 1.1°E), likely a fallen jewelry inlay.
