Updated as of June 2026
Demantoid Garnet
A rare brilliant green garnet prized for its high dispersion and fire, linked to vitality and prosperity.
Price range$200 to $3,000/ct
Hardness (Mohs)6.75
ColorsGreen, Yellow-green
BirthstoneJanuary
AltGems Score How we score
7.2/10
Demantoid Garnet pros and cons
Pros
- Good durability (Mohs 6.75) for most jewelry
- Exceptional brilliance and sparkle
- Rare and collectible
- A recognized birthstone (January)
Cons
- Softer at Mohs 6.75, best in protected settings
- Commonly treated (heat treatment (some stones))
- Premium per-carat cost for fine quality
Demantoid Garnet is ideal for earrings, pendants, and occasional-wear rings, and works in everyday rings with a protective setting.
Explore Demantoid Garnet
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 bestDemantoid Garnet jewelry
Demantoid Garnet ringsDemantoid Garnet engagement ringsDemantoid Garnet necklacesDemantoid Garnet pendantsDemantoid Garnet earringsDemantoid Garnet bracelets
Demantoid Garnet by cut
Round Demantoid GarnetOval Demantoid GarnetEmerald Cut Demantoid GarnetCushion Demantoid GarnetPrincess Demantoid GarnetPear Demantoid GarnetAll cuts
Demantoid Garnet by metal
Demantoid Garnet in yellow goldDemantoid Garnet in white goldDemantoid Garnet in rose goldDemantoid Garnet in platinumDemantoid Garnet in sterling silver
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 6.75) in an exposed daily-wear ring instead of a protective bezel or halo.
- Cleaning it the wrong way. Durable. Clean with warm soapy water and a soft brush. Avoid sudden temperature changes and ultrasonic cleaners.
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Where to buy Demantoid Garnet: 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 Demantoid Garnet?
A rare brilliant green garnet prized for its high dispersion and fire, linked to vitality and prosperity. It rates 6.75 on the Mohs hardness scale and commonly appears in green, yellow-green.
How much does Demantoid Garnet cost?
Demantoid Garnet typically runs about $200 to $3,000 per carat depending on color, clarity, cut, and origin. See our Demantoid Garnet price guide for detail.
Is Demantoid Garnet good for everyday jewelry?
It rates 6.75 on the Mohs scale, so it suits earrings, pendants, and occasional-wear rings better than daily rough use.
What is the AltGems Score for Demantoid Garnet?
Demantoid Garnet earns an overall AltGems Score of 7.2 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 Demantoid Garnet?
Durable. Clean with warm soapy water and a soft brush. Avoid sudden temperature changes and ultrasonic cleaners.