A moissanite engagement ring in Singapore has gone from a niche choice to something you will now see in jewellers’ display cases and on plenty of newly engaged hands. It looks like a diamond at a glance, it is very hard wearing, and it usually costs far less. But it is not a diamond, and it behaves differently in a few ways that matter for a ring you plan to wear every day for decades.
This guide focuses on how moissanite compares with diamond on brilliance, durability and price, so you can decide whether it suits you. If you are still weighing up mined against lab-grown diamonds, that is a separate decision covered in our guide to lab-grown vs natural diamond engagement rings.
What Moissanite Actually Is
Moissanite is silicon carbide, a crystal first identified in the late 1800s by the French chemist Henri Moissan in fragments linked to a meteorite. Natural moissanite is extremely rare and far too small for jewellery, so every moissanite stone you will buy is created in a laboratory.
That is the key difference from a lab-grown diamond. A lab-grown diamond is chemically and physically a diamond, just made in a factory instead of mined. Moissanite is an entirely different mineral that happens to look similar. It is also different from cubic zirconia, the inexpensive simulant used in costume jewellery, which is much softer and tends to scratch and cloud over time.
Brilliance: Why Moissanite Looks Different Up Close
Moissanite is often described as “more sparkly” than diamond, and in a technical sense that is fair. It bends light more strongly than diamond (a higher refractive index) and splits light into colours far more (higher dispersion). In practice this means:
- More “fire”. You will see flashes of rainbow colour, especially under direct sunlight or the spotlights common in shopping malls and restaurants.
- A slightly different look. Diamonds show a crisp mix of white sparkle and colour. Moissanite, particularly in larger sizes, can look busier, sometimes called a “disco ball” effect. Some people love this; others find it a giveaway.
- Size matters. In smaller stones, most people cannot tell the difference without tools. As stones get larger, the extra rainbow flash becomes easier to notice.
Older moissanite sometimes had a faint yellow or greenish tint. Modern production has improved, and many stones are now sold as colourless or near-colourless. There is no single independent grading standard for moissanite equivalent to diamond grading, so colour and clarity descriptions usually come from the manufacturer or retailer. Ask exactly what grading system is being used.
Before you shop, it helps to look at moissanite and diamond side by side in the same lighting, ideally both indoors and near a window. Your own eye is the best test of whether the extra fire appeals to you.
Durability: How It Holds Up to Daily Wear
An engagement ring takes knocks from door handles, gym equipment, grocery bags and MRT poles. Durability is where moissanite performs very well.
- Hardness. On the Mohs scale of scratch resistance, diamond sits at 10 and moissanite at about 9.25. That makes moissanite harder than sapphire, ruby and nearly every other gemstone, so it resists everyday scratches well.
- Toughness. Moissanite is also tough, meaning it is not especially prone to chipping. Any stone can still chip if struck hard at the wrong angle, so a protective setting helps.
- Heat. Moissanite tolerates heat well, which is useful for jewellers doing repairs or resizing.
- Long-term appearance. Like diamond, it does not cloud with age. It will collect grease and lotion, which dulls sparkle, but a gentle clean restores it.
In Singapore’s humid weather, sunscreen and hand cream build up quickly behind a stone. Soak the ring in warm water with a little mild dish soap and brush gently with a soft toothbrush every week or two. Have a jeweller check the prongs once a year, as the metal setting is usually the weak point, not the stone.
Price: Where Moissanite Wins Clearly
The main reason most couples consider moissanite is cost. A moissanite stone typically costs a small fraction of a natural diamond of similar size and appearance, and is usually cheaper than a lab-grown diamond too. Exact prices vary widely with the size, cut quality, brand and setting, so compare quotes from several jewellers rather than relying on any single figure.
What the saving lets you do:
- Choose a larger centre stone without stretching your budget.
- Put more of your budget into the band, such as a better metal or a more detailed design.
- Redirect money towards the wedding, a BTO renovation or savings.
The trade-off is resale value. Moissanite has very little resale value, and you should treat it as a purchase for wearing, not an asset. Natural diamonds also tend to resell for far below their retail price, so this gap is smaller than many people assume, but it is still worth knowing.
Moissanite vs Diamond at a Glance
| Factor | Moissanite | Natural diamond | Lab-grown diamond |
|---|---|---|---|
| What it is | Silicon carbide, lab-created | Carbon, mined | Carbon, lab-created |
| Hardness (Mohs) | About 9.25 | 10 | 10 |
| Sparkle | More rainbow fire, can look busier | Balanced white and colour | Same as natural diamond |
| Relative price | Lowest of the three | Highest | Usually in between |
| Resale value | Very low | Low to moderate | Low |
| Independent grading | Usually seller or brand grading | Widely graded by labs | Widely graded by labs |
How to Buy a Moissanite Ring Safely in Singapore
Moissanite is sold by established jewellers, smaller independent studios and many online shops. To avoid disappointment:
- Insist on clear disclosure. The receipt and any certificate should state “moissanite” plainly. Be wary of vague terms like “diamond alternative” or “simulated diamond” without the actual material named.
- Ask about the metal. Check whether the band is solid gold, platinum, or plated silver. Plating wears off over time, which matters for a ring worn daily.
- Check the cut. A well-cut moissanite looks far better than a poorly cut one. Compare stones in person where possible.
- Understand testing. Many basic thermal diamond testers can mistake moissanite for diamond. If you are buying any stone sold as diamond, a proper gemmological check is worth having.
- Read the warranty and return policy. Ask about resizing, prong checks, and what happens if the stone is lost from the setting.
- Keep paperwork. Save receipts and any certificate in case you need to make an insurance claim. If you run into a dispute with a retailer, the Consumers Association of Singapore (CASE) provides guidance on consumer rights.
Our wider guide to choosing an engagement ring in Singapore covers ring sizing, settings and metals in more depth.
Is a Moissanite Engagement Ring Worth It?
Moissanite is worth it if you want a bright, durable stone that looks like a diamond from normal viewing distance, and you would rather spend the difference elsewhere. It is a sensible choice for active people, for couples who prefer a larger stone, and for anyone uneasy about the cost or sourcing of mined diamonds.
It may not suit you if the symbolism of a diamond specifically matters to you or your families, if you dislike the stronger rainbow sparkle, or if you want a stone with recognised independent grading. Have an honest conversation with your partner before the proposal: some people would genuinely prefer moissanite, while others would feel quietly disappointed. There is no wrong answer, only the one that fits your values and budget.
Explore more: Choosing an Engagement Ring in Singapore, Lab-Grown vs Natural Diamond Engagement Rings, Proposal and Engagement Spots in Singapore.
Further reading: How Much Should You Spend on an Engagement Ring in Singapore?