Frequently Asked Questions About Moissanite

What Gives Moissanite its Characteristic Sparkle, Fire and Brilliance?

Moissanite’s exceptional sparkle and brilliance result from its high refractive index (2.65-2.69), significantly higher than diamonds (2.42). Its high dispersion creates rainbow-coloured flashes known as “fire”. Learn about Moissanite’s 5Cs here.

Will Moissanite’s Brilliance Ever Fade?

No. Moissanite SA™ and Charles & Colvard offer lifetime warranties guaranteeing the lasting brilliance of all Majestic Moissanite™ and Charles & Colvard gemstones.

Moissanite vs. Cubic Zirconia: What’s the Difference?

Moissanite is harder (9.25 Mohs scale), highly durable, scratch-resistant, and maintains brilliance permanently. Cubic Zirconia (CZ) is softer, prone to scratches, and loses lustre quickly.

How Can I Identify Genuine Moissanite?

Identify genuine Moissanite using specialised testers, checking girdle engravings (e.g., ‘MM’ for Majestic Moissanite™), or by professional refractive index measurements. See our comparison guide for more.

What Exactly is Moissanite?

Moissanite is a rare gemstone composed of silicon carbide, prized as a sustainable, ethical alternative to diamonds for jewellery. Read more about Moissanite here.

How Do I Know if Moissanite Is High-Quality?

Quality Moissanite includes a Certificate of Authenticity and Lifetime Warranty, ensuring strict standards and expert cutting for maximum brilliance. See our Moissanite buying guide.

Can the Colour of Moissanite Change Over Time?

No permanent colour changes occur in Moissanite. Temporary colour shifts may happen during jewellery repairs but revert when cooled. See our Jeweller’s Bench Guide.

Does Moissanite Have Inclusions?

Moissanite SA™ gemstones are free from visible inclusions. Stones are individually inspected at 10x magnification. Learn about Moissanite grading.

What Moissanite Colours Are Available?

Moissanite SA™ provides colourless and near-colourless Moissanite in DEF and GH ranges (Majestic Moissanite™) and DEF and GHI ranges (Charles & Colvard). View our stone colour chart.

Does Moissanite Scratch or Break Easily?

No. Moissanite, rating 9.25 on Mohs scale, is highly resistant to scratches, chips, and breaks, second only to diamonds.

Can Moissanite Tolerate High Temperatures?

Yes. Moissanite withstands temperatures exceeding 1000°C without damage or loss of brilliance.

Why Choose Moissanite for Your Engagement Ring?

Moissanite offers unmatched brilliance, ethical sourcing, affordability, and supports local craftsmanship—perfect for ethically conscious couples. Discover our engagement rings.

How Should I Clean My Moissanite Jewellery?

Clean moissanite jewellery using warm water, mild soap, and a soft toothbrush. Ultrasonic cleaners and commercial jewellery cleaners (non-acidic) are also suitable.