Moissanite Guide
Moissanite is a stunning gemstone that has captivated jewellery lovers around the world with its extraordinary brilliance and exceptional value. Whether you are new to moissanite or looking to deepen your knowledge, this guide will help you make a confident and informed choice.
What Is Moissanite?
Moissanite is a naturally occurring mineral (silicon carbide) first discovered in 1893 by Nobel Prize-winning scientist Henri Moissan in a meteor crater in Arizona. Natural moissanite is incredibly rare, so virtually all moissanite used in jewellery today is created in a laboratory — making it an ethical and sustainable choice.
Moissanite vs Diamond
| Property | Moissanite | Diamond |
|---|---|---|
| Hardness (Mohs) | 9.25 | 10 |
| Refractive Index | 2.65–2.69 | 2.42 |
| Brilliance | Higher fire & brilliance | Exceptional brilliance |
| Origin | Lab-created | Mined or lab-grown |
| Price | Significantly lower | Higher |
| Ethical | Conflict-free | Varies |
Moissanite Grades & Colour
Moissanite is graded by colour, similar to diamonds:
- Colourless (D–F equivalent) — The highest grade, with no visible colour. Virtually identical in appearance to a top-grade diamond.
- Near-Colourless (G–I equivalent) — Excellent value with minimal colour detectable only under magnification.
- Faint Colour (J–K equivalent) — A warm hue that suits yellow or rose gold settings beautifully.
Moissanite Shapes
Moissanite is available in a wide range of shapes to suit every style:
- Round Brilliant — The most popular shape, offering maximum fire and sparkle.
- Oval — Elegant and elongating, a stunning choice for engagement rings.
- Cushion — Romantic and vintage-inspired with exceptional brilliance.
- Princess — A modern square shape with impressive sparkle.
- Pear — A graceful teardrop shape with a unique, eye-catching look.
- Emerald — Sleek and sophisticated with a distinctive step-cut style.
- Radiant — A brilliant rectangular cut with outstanding fire.
- Heart — A romantic and symbolic shape, perfect for a truly meaningful gift.
Caring for Your Moissanite
Moissanite is one of the most durable gemstones available and requires minimal maintenance. Clean gently with warm soapy water and a soft brush, and store separately to prevent scratching other jewellery. See our full Jewellery Care Guide for more tips.
Have Questions?
Our team loves talking about moissanite. Contact us and we will help you find the perfect stone.