Diamond, moissanite and sapphire are all tough enough for daily wear, but they are not identical. Diamond is the hardest at 10 on the Mohs scale, moissanite sits at about 9.25 and sapphire at 9, so each handles knocks, scratches and cleaning a little differently. Here is how the three compare so you can choose a stone that suits your real life.
Key Takeaways
- Diamond scores 10 on the Mohs scale, moissanite about 9.25 and sapphire 9, and all three suit everyday wear.
- Hardness measures scratch resistance, not toughness, so any stone can chip if it is struck at the wrong angle.
- The setting matters as much as the stone, and a bezel or low profile setting gives extra protection.
- All three need regular cleaning, and warm water, mild dish soap and a soft brush work well.
- Vinny & Charles makes rings with moissanite, sapphire and lab-created diamonds, handcrafted in gold in Perth.
Scratch Resistance: Understanding the Mohs Scale
The Mohs scale ranks how well a mineral resists scratching, from 1 to 10. Diamond scores 10, moissanite about 9.25 and sapphire 9, which means only a harder material can scratch each of them.
In practice, all three are very durable. You can wear any of them daily without worrying about ruining the surface. Diamond and moissanite hold their sharp facet edges a little longer over decades, while a sapphire may show fine surface wear after many years of heavy use. For most people the difference is small and only visible under magnification.
Matching the Stone to Your Daily Routine
If you use your hands a lot, diamond and moissanite are the safest choices, because their extra hardness helps them keep their polish. Think about how you spend your week, whether that is the gym, gardening, cooking or caring for young children.
Moissanite is a strong contender here. It is a lab-created stone with excellent durability and a brilliance different to a diamond's, with rainbow flashes in certain lights. If you love the colourless look at a lower cost, browse our moissanite engagement rings. Our guide to lab-created stones explains how they are made.
Hardness Versus Toughness: Chips and Everyday Knocks
Hardness is not the same as toughness. Hardness describes resistance to scratching, while toughness describes resistance to breaking or chipping. Any gemstone, including a diamond, can chip if it takes a sharp blow at the wrong angle, such as against a stone benchtop or a car door.
That is why the setting matters as much as the stone. A bezel setting wraps metal around the stone, and a low profile setting keeps it close to the finger, so both reduce the chance of a knock. If you work with your hands, tell us when you design your ring and we can suggest a setting to suit.
Sapphires bring something different to the table: colour. If you want a pop of teal, blue, green or pink, our sapphire engagement rings are a durable way to get it, and a protective setting helps them last for years.
Cleaning and Maintenance for Long Term Sparkle
All three stones need regular cleaning, because hand sanitiser, sunscreen, moisturiser and everyday oils build up on the surface and dull the sparkle. Diamonds in particular attract grease, so a ring that looks cloudy usually just needs a clean.
You do not need harsh chemicals or special equipment. Our jewellery care guide recommends a gentle home clean using a soft brush, warm water and mild dish soap in a cup, which also keeps any loose stone from going down the drain. Gently brush behind the stone where grime collects, then dry and wipe the ring with a soft cloth.
We also suggest having your jewellery serviced every 6 to 10 months so a jeweller can check that the stones are secure. At Vinny & Charles, our lifetime warranty against manufacturing defects includes one free routine inspection, clean and polish each year. White gold pieces are rhodium plated, so they may need replating over time, which is not included in the warranty.
Which Stone Should You Choose?
Choose diamond or moissanite if you want a colourless stone that holds its polish through a very active life, and choose sapphire if you want colour and character and are happy to give it a little care. All three suit daily wear when set well and cleaned regularly.
Whichever you choose, your ring should fit your life without you having to change your habits to protect it. Existing designs at Vinny & Charles take up to 3 weeks to make, with free express tracked shipping, and we can also create a custom design. Explore our rings and let us help you find a stone that suits your daily routine.
Frequently Asked Questions
Is moissanite as durable as diamond?
Moissanite is very durable, scoring about 9.25 on the Mohs scale compared with 10 for diamond. Both resist scratching well and suit daily wear. Diamond holds its sharp edges slightly longer over decades, but most people will not notice the difference without magnification. A good setting protects either stone from chips.
Which stone is best for an engagement ring worn every day?
Diamond and moissanite are the safest choices for a very active lifestyle because they are the hardest. Sapphire, at 9 on the Mohs scale, is also durable and adds colour. The setting and regular cleaning matter just as much as the stone, so choose a design that suits your routine.
Do sapphires scratch easily?
No. Sapphire scores 9 on the Mohs scale, so it resists everyday scratches well. After many years of heavy wear it may show fine surface marks that a diamond would resist for longer. Regular cleaning, careful storage and a protective setting help a sapphire ring keep its colour and shine.
