
Moonstone vs Opal: How to Tell Two Ghostly Gems Apart in Seconds
Moonstone and opal both glow with a soft, shifting, otherworldly light, which is exactly why people confuse them. But the glow comes from two completely different tricks of physics. Here is what moonstone and opal actually are, the one-look test that tells them apart every time, why rainbow moonstone muddies the water, the glass fake sold as both, and which is more expensive, more durable, and right for you.
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