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The ultimate comparison between moissanite and diamond: 5 major differences + purchasing suggestions, save 80% of your budget and avoid pitfalls!
Why do 90% of people waste money when they buy "diamonds" for the first time?
"I spent 30,000 yuan on a diamond ring, but my friend asked if it was a moissanite?"
"The merchant said that moissanite is as shiny as diamonds, will it turn yellow after wearing it for a long time?"
These heart-wrenching questions reveal consumers' confusion about moissanite and diamonds. This article combines GIA certification data with internal information from jewelers, using a table + 5 major comparisons to tell you who should buy diamonds and who should choose moissanite blindly! At the end of the article, there is a **"High Cost-Effective Shopping Map"**, which can save 80% of your budget immediately!
一. Composition and origin: natural vs. artificial, which is more "real"?
1. Diamond
Composition: pure carbon, the hardest natural mineral in nature.
Formation: 150-200 kilometers underground, crystallized under high temperature and pressure for 1 billion years.
Rarity: 1 carat of diamond can be obtained for every 250 tons of ore mined.
2. Moissanite
Composition: silicon carbide (SiC), an artificial gem cultivated in the laboratory.
Origin: discovered by French scientists in meteorites in 1893, and then artificially synthesized.
Mass production: 1 carat can be cultivated in the laboratory in 7-10 days, and the cost is only 1/10 of diamond.
In a word: Diamond is the "time capsule" of the earth, and Moissanite is the "optical magic" of technology.
二. Physical performance comparison: Can the naked eye see the difference?
1. Hardness
Diamond: Mohs hardness 10, unmatched in nature.
Moissanite: Mohs hardness 9.25 (higher than ruby and sapphire), almost scratch-free for daily wear.
2. Fire (brilliance)
Diamond: refractive index 2.42, dispersion value 0.044, classic "white flash".
Moissanite: refractive index 2.65, dispersion value 0.104, fire intensity is 2.5 times that of diamond, showing "rainbow halo" under light.
3. Thermal conductivity (can the diamond test pen distinguish it?)
Diamond: excellent thermal conductivity, the diamond test pen shows "diamond".
Moissanite: thermal conductivity is similar to diamond, ordinary diamond test pens cannot distinguish, and professional spectrometers are required for detection.
Pit avoidance guide: If the merchant claims that "diamond test pens can verify authenticity", it is likely to be a scam!
三. Price comparison: The money saved is enough to buy an LV bag!
Specifications Diamond price (RMB) Moissanite price (RMB)
1 carat 30,000-100,000 500-3,000
2 carats 100,000-500,000 1,500-8,000
Example: Buying a 2-carat Moissanite ring (about 8,000 RMB) vs. the same size diamond (about 200,000 RMB), the difference is enough to buy a car!
四. Value preservation and wearing scenarios: Which one is more suitable for you?
1. Diamond
Advantages: Strong international liquidity, and room for appreciation for diamonds above 1 carat.
Suitable for: engagement rings, heirlooms, high net worth investments.
2. Moissanite
Advantages: Budget-friendly, more brilliant fire, suitable for daily wear.
Suitable for:
Want to wear large carats but with a limited budget
Fashion players who frequently change styles
Environmentalists (avoid mining disputes)
五. Naked eye identification: 3 seconds to distinguish between moissanite and diamond
Rainbow light test:
When rotating the gemstone under white light, moissanite will refract obvious rainbow light, while diamond mainly reflects cold white light.
Ghosting effect:
Using a 10x magnifying glass to observe the facet edges, moissanite will show ghosting due to double refraction, while diamond is clear and has no ghosting.
Mist test:
Breathe on the gemstone, the mist on the surface of diamond will dissipate instantly, while it takes 2-3 seconds for moissanite.
Buying suggestions: Who should buy moissanite?
✅ Limited budget but pursuing large carat effect: choose moissanite, the visual impact is not inferior to diamond.
✅ Afraid of losing/scratching during daily wear: Moissanite is cost-effective and you don’t feel bad if you lose it.
✅ Environmental protection and ethical considerations: reject the controversy of blood diamonds, and laboratory cultivation is more secure.
❌ Pursuing inheritance and investment: choose natural diamonds and look for GIA certificates.
Data Statement:
The data in this article comes from the GIA official website and the International Gem Association (IGA), and is originally created by [JOOMLEE] Jewelry Laboratory. Any infringement will be investigated.
(Limited time benefit):
Leave a comment in the comment area saying "I want a moissanite" and 3 people will be selected to receive a 1 carat moissanite ring trial set! 🚀