Core properties of round moissanite:
- **Hardness**: 9.25 (Mohs hardness), second only to diamond (10), wear-resistant for daily wear.
- **Fire color**: refractive index 2.65 (diamond 2.42), dispersion value 0.104 (diamond 0.044), more intense flash.
- **Color**: D-F color (colorless grade) is the most common, low quality yellowish/grayish moissanite should be avoided.
Will moissanite fade or yellow?
- **High-quality moissanite (D-F colors) will not fade or yellow**, but lower quality coated products may lose their luster due to long-term wear.
- **Maintenance advice**: Clean regularly with a soft cloth + mild soapy water and avoid contact with chemicals (e.g. perfume, bleach).