Moissanite vs. Diamond

Discover the differences between moissanite and diamonds, from sparkle and durability to cost, and find out which gem suits you best.


What is Moissanite?

Moissanite is a gemstone made from silicon carbide, first discovered in a meteor crater by Nobel Prize-winning chemist Henri Moissan in 1893. While natural moissanite is extremely rare, today’s moissanite is lab-created, which makes it more accessible, affordable and environmentally friendly compared to mined diamonds. It’s a stone that looks a lot like a diamond but has its own unique qualities, including its incredible sparkle, brilliance and durability.



How Diamonds and Moissanite Differ

At first glance, diamonds and moissanite can look very similar. But here’s a deeper dive into the differences:

  • Brilliance & Fire: Moissanite has a higher refractive index (2.65–2.69) than diamonds (2.42), which means it reflects light more intensely and produces more rainbow-colored flashes. Diamonds have a subtler sparkle with more of a colorless glow.

  • Hardness: On the Mohs scale, diamonds are the hardest mineral at 10, while moissanite is slightly softer at 9.25. This makes both stones durable for everyday wear, but diamonds resist scratches a little better.

  • Color & Clarity: Diamonds come in a range of colors, and high-grade diamonds are completely colorless. Moissanite is usually near-colorless but may show slight yellow or green tints under certain lighting conditions.


Can Moissanite Pass a Diamond Tester?

A common question is whether moissanite can pass a diamond tester. The answer is sometimes yes, sometimes no. Thermal diamond testers usually rely on heat conductivity. Moissanite conducts heat similarly to diamonds, so these testers can mistakenly identify it as a diamond. However, more advanced testers like devices that measure electrical conductivity or other properties can clearly distinguish moissanite from diamond.



Is Moissanite Expensive?

Moissanite is more affordable than diamonds, but that doesn’t mean it’s any less stunning. In fact, it can rival a diamond in sparkle, brilliance and fire, so when you see one in person, it has all the glamour and elegance you’d expect from a luxury stone.

The reason it’s more budget-friendly comes down to how it’s made. Unlike diamonds that are mined from the earth, which is a process that is labor-intensive, time-consuming and often expensive, moissanite is lab-created. This controlled process allows for beautiful, high-quality stones without the cost and environmental impact of mining.

This means you can get a larger, brighter stone for the same price as a smaller diamond. That’s why moissanite is a popular choice for engagement rings, anniversary gifts or if you want a sparkly stone without breaking the bank.



How Moissanite is Made?

Lab-created moissanite is formed by replicating the natural conditions under which silicon carbide crystals grow. This controlled process produces perfectly clear, durable and sparkly stones. Because it’s created in a lab, moissanite avoids the ethical concerns and environmental impact associated with diamond mining.



Why People Choose Moissanite Over Diamonds?

When it comes to picking a gemstone, moissanite is quietly stealing the spotlight. Here’s why so many people are falling for it:

  1. Affordability Without Compromise
  2. One of the biggest perks of moissanite is that it lets you get more sparkle for your money. Because it’s lab-created, moissanite costs a lot less than diamonds, which means you can choose a larger and brighter stone without stretching your budget or compromising on quality. Moissanite looks every bit as luxurious as a diamond but it comes with extra freedom to pick a larger size.

  3. Ethical & Sustainable
  4. If being conscious about your choices matters to you, moissanite is a clear winner. Unlike mined diamonds, which often involve environmentally taxing processes and ethical concerns, moissanite is lab-grown under controlled conditions. That means you get a gem that’s eco-friendly, responsibly made and fully traceable.

  5. Durable for Daily Wear
  6. With a hardness of 9.25 on the Mohs scale, moissanite is scratch-resistant and durable enough for everyday wear, which makes it ideal for engagement rings, anniversary gifts or any piece you plan to wear regularly. So you can enjoy its brilliance for years without worry.

  7. A Sparkle All Its Own
  8. Moissanite has a higher refractive index than diamonds, which means it catches light in a way that produces more rainbow flashes and intense sparkle. It’s a stone that practically dances in the light and gives your jewelry an eye-catching personality that’s hard to ignore.



Final Thoughts

At the end of the day, both diamonds and moissanite are beautiful, durable and meaningful gemstones. The choice really comes down to what matters most to you, your style, values and the story you want your jewelry to tell.

Moissanite is quietly winning hearts for all the right reasons. It’s ethically created, lab-grown under controlled conditions and free from the environmental and ethical concerns that can come with mining diamonds. Beyond that, its sparkle is intense and lively as it throws off brilliant flashes of rainbow-colored light. Because it’s more budget-friendly, you can often choose a larger stone without compromising on quality or style.

Whether you go with a diamond or a moissanite, you’ll have a stone that’s stunning, durable and meaningful. When you do decide on moissanite, you’ll end up with a gem every bit as beautiful and luxurious as a diamond, with a sparkle that even outshines it.


If you have any further questions, feel free to reach us at care@vianisa.com