Updated as of June 2026
Prehnite
A soft green silicate associated in crystal tradition with calm, intuition, and inner peace.
Price range$3 to $60/ct
Hardness (Mohs)6.25
ColorsGreen, Yellow-green, Colorless
BirthstoneNone
AltGems Score How we score
5.4/10
Prehnite pros and cons
Pros
- Strong value for the look
- Usually sold untreated
Cons
- Softer at Mohs 6.25, best in protected settings
- Opaque, so it shows color rather than sparkle
Prehnite is ideal for earrings, pendants, and occasional-wear rings, and works in everyday rings with a protective setting.
Explore Prehnite
Meaning and properties
Symbolism, zodiac, chakraPrice and value
What it costs and whyBuying guide
How to choose and where to buyCare and cleaning
Keep it looking its bestPrehnite jewelry
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Common buying mistakes
- Buying on carat weight alone instead of color and cut, which drive beauty more.
- Skipping treatment disclosure, which changes both value and care.
- Setting this softer stone (Mohs 6.25) in an exposed daily-wear ring instead of a protective bezel or halo.
- Cleaning it the wrong way. Moderately durable. Clean with warm soapy water and a soft cloth. Avoid ultrasonic cleaners and harsh chemicals.
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Where to buy Prehnite: for fine pieces, choose established jewelers with clear return policies and lab reports; for unique or budget pieces, vetted marketplace sellers work well. Always confirm treatment and the return window before buying. AltGems prices are general per-carat guides, so verify value with a certified gemologist or GIA report.
Frequently asked questions
What is Prehnite?
A soft green silicate associated in crystal tradition with calm, intuition, and inner peace. It rates 6.25 on the Mohs hardness scale and commonly appears in green, yellow-green, colorless.
How much does Prehnite cost?
Prehnite typically runs about $3 to $60 per carat depending on color, clarity, cut, and origin. See our Prehnite price guide for detail.
Is Prehnite good for everyday jewelry?
It rates 6.25 on the Mohs scale, so it suits earrings, pendants, and occasional-wear rings better than daily rough use.
What is the AltGems Score for Prehnite?
Prehnite earns an overall AltGems Score of 5.4 out of 10, balancing durability, brilliance, value, rarity, and everyday wearability. See our methodology on the How We Score page.
How do I care for Prehnite?
Moderately durable. Clean with warm soapy water and a soft cloth. Avoid ultrasonic cleaners and harsh chemicals.