Updated as of June 2026
Opal
Prized for its play-of-color and linked to creativity, inspiration, and emotional expression.
Price range$10 to $1,000/ct
Hardness (Mohs)5.75
ColorsWhite, Black, Fire, Boulder
BirthstoneOctober
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Symbolism, zodiac, chakraPrice and value
What it costs and whyBuying guide
How to choose and where to buyCare and cleaning
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Frequently asked questions
What is Opal?
Prized for its play-of-color and linked to creativity, inspiration, and emotional expression. It rates 5.75 on the Mohs hardness scale and commonly appears in white, black, fire, boulder.
How much does Opal cost?
Opal typically runs about $10 to $1,000 per carat depending on color, clarity, cut, and origin. See our Opal price guide for detail.
Is Opal good for everyday jewelry?
It rates 5.75 on the Mohs scale, so it suits earrings, pendants, and occasional-wear rings better than daily rough use.