Opalite vs. Moonstone: What's the Difference?

Opalite and moonstone are often confused — both have a soft blue glow, both are worn in similar settings. But one is a natural feldspar and the other is manmade glass, and the difference matters for care, price, and what you're paying for.

Moonstone (natural)

• Family: Feldspar (orthoclase / albite)
• Mohs hardness: 6–6.5
• Optical effect: adularescence — a floating internal glow
• Sources: Sri Lanka, India, Madagascar

The GIA's moonstone reference covers the mineralogy — the shimmer comes from light scattering between microscopic feldspar layers.

Opalite (manmade)

• Type: Opalized glass (not a natural stone)
• Mohs hardness: ~5.5
• Optical effect: milky blue-orange shift
• Sources: manufactured, primarily in Asia

How to tell them apart

1. Look at the glow. Moonstone's glow floats and shifts with viewing angle; opalite's shift is a flatter color change.
2. Check for inclusions. Natural moonstone often shows tiny internal cracks; opalite is uniformly clean.
3. Ask the seller. Reputable listings label opalite as opalized glass or manmade — ours do.

Which should you buy?

Both are valid — opalite is a beautiful, affordable material and we use it deliberately in our crystal pendant sets. Moonstone commands a higher price for its rarity and optical effect. Neither is fake unless it's mislabeled.

Care

Both are soft. Dry cloth only, no ultrasonic, no soaking. See our stone care guide for the full routine.