Updated as of June 2026
Moissanite
A lab-created diamond alternative prized for exceptional brilliance and fire at a fraction of diamond cost. Originally discovered in a meteorite crater.
Price range$200 to $800/ct
Hardness (Mohs)9.25
ColorsColorless, Near-colorless
BirthstoneNone
AltGems Score How we score
7.4/10
Moissanite pros and cons
Pros
- Excellent durability (Mohs 9.25) for everyday wear
- Exceptional brilliance and sparkle
Cons
- Commonly treated (lab-grown (not a treatment, fully synthetic))
- Quality varies widely, so compare before buying
Moissanite is durable enough for engagement rings and daily-wear jewelry of every kind.
Launch offer: 5% off your first necklace with code WELCOME5
Shop Moissanite jewelryReady to buy?
- Handmade in the USA
- Made to order
- Ships in 3 to 5 days
- Gift-boxed
- Satisfaction guaranteed
Explore Moissanite
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 bestMoissanite jewelry
Moissanite ringsMoissanite engagement ringsMoissanite necklacesMoissanite pendantsMoissanite earringsMoissanite bracelets
Moissanite by cut
Round MoissaniteOval MoissaniteEmerald Cut MoissaniteCushion MoissanitePrincess MoissanitePear MoissaniteAll cuts
Moissanite ring styles
Moissanite solitaire ringMoissanite halo ringMoissanite three stone ringMoissanite hidden halo ringMoissanite vintage and antique ringMoissanite bezel ringAll styles
Moissanite by metal
Moissanite in yellow goldMoissanite in white goldMoissanite in rose goldMoissanite in platinumMoissanite 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.
- Overpaying at one retailer without comparing the same color and carat elsewhere.
- Cleaning it the wrong way. Very durable and safe to clean with warm soapy water, a soft brush, or an ultrasonic cleaner. Resists scratching in everyday wear.
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Colorless · Mohs 10Where to buy Moissanite: 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 Moissanite?
A lab-created diamond alternative prized for exceptional brilliance and fire at a fraction of diamond cost. Originally discovered in a meteorite crater. It rates 9.25 on the Mohs hardness scale and commonly appears in colorless, near-colorless.
How much does Moissanite cost?
Moissanite typically runs about $200 to $800 per carat depending on color, clarity, cut, and origin. See our Moissanite price guide for detail.
Is Moissanite good for everyday jewelry?
Yes. At Mohs 9.25 it is durable enough for rings and daily wear with normal care.
What is the AltGems Score for Moissanite?
Moissanite earns an overall AltGems Score of 7.4 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 Moissanite?
Very durable and safe to clean with warm soapy water, a soft brush, or an ultrasonic cleaner. Resists scratching in everyday wear.