Moissanite 101

Moissanite is widely used and loved in the world of fine jewelry. But what is it? Here’s everything you need to know about moissanite and why buyers and jewelers alike often choose to create stunning pieces using this beautifully unique gemstone.

What is moissanite?

Moissanite was first discovered in 1893 by French scientist Henri Moissan in a meteorite crater in Arizona. Initially mistaken for diamonds, these natural moissanite crystals were later identified as silicon carbide.

Lab-Created Gemstone: Natural moissanite is extremely rare, so virtually all moissanite used in jewelry today is lab-created. This ensures ethical sourcing and minimal environmental impact.

How do moissanites compare to diamonds?

• Composition: Moissanites are made of silicon carbide, a naturally occurring mineral that is extremely rare in nature. Most moissanites on the market are lab-created. On the other hand, both natural and lab diamonds are composed of carbon.
• Appearance: Moissanites have a refractive index of 2.65 giving them a more colorful sparkle, especially in sunlight. Diamonds have a lower refractive index of 2.42, so their sparkle is slightly less intense. However, this distinction is typically not noticeable to the average person.
• Hardness and Durability: Diamonds and moissanites are the two hardest gemstones. Moissanites are a 9.25 on the Mohs scale of hardness, only second to diamonds which is a 10. Both are extremely durable and suitable for long term daily wear.
• Cost: Moissanites are significantly more affordable than diamonds, often costing 70–90% less. This makes moissanite an attractive option for budget-conscious buyers who still want a brilliant, durable gemstone

How do moissanites compare to cubic zirconias?

Cubic Zirconia is made of zirconium dioxide, a completely synthetic material. It’s a common choice for costume jewelry because of its affordability. 

Aside from cost, the most important difference between the stones is durability. Cubic zirconias are more susceptible to wear and tear. They lose their luster quickly because they easily develop scratches. For that reason, they’re best for costume jewelry that won’t be worn daily.

How are moissanites graded?

Moissanites are graded based on several key factors that assess their quality and appearance. While moissanite grading is not as standardized as diamond grading, there are specific criteria used to evaluate these gemstones. Here's an overview:

• Color: Moissanites are graded on a color scale similar to diamonds, ranging from colorless to near-colorless and faint hues. The three main categories are:
• Colorless (D-F): These moissanites appear completely white and are most desirable for their diamond-like appearance. Unless otherwise noted, all moissanites from Jiovanni Jewels fall within this range.
• Near-Colorless (G-H): These stones may exhibit a slight warmth but still appear bright and beautiful to most observers.
• Faint Color (I-J): These have a noticeable tint, often yellow or gray, and are less expensive.
• Modern lab techniques have made it possible to create nearly colorless moissanites, which are the most popular choice for jewelry.
• Clarity: Clarity refers to the presence of inclusions (internal flaws) or blemishes (surface imperfections). Moissanites generally have excellent clarity, with most high-quality stones rated as VS (very slightly included) or better. These inclusions are typically invisible to the naked eye.
• Cut: The cut of a moissanite determines its brilliance and how well it reflects light. Moissanites are often cut to maximize their fire (rainbow-like flashes) and brilliance. Common cuts include round, oval, cushion, and emerald. A well-cut moissanite will exhibit a symmetrical shape and excellent light performance.
• Certification: While moissanites don’t have a universal grading certification like diamonds, reputable sellers often provide quality assurance reports. These include information about the gem's cut, color, clarity, and dimensions.

Why would I choose moissanite?

1. Cost: Moissanites are substantially less expensive than natural diamonds. And even though lab diamonds are now more accessible and affordable, they still cost more than moissanites. So for those who want the most bang for their buck, moissanite is a great option because they offer nearly the same look and durability as a diamond for a fraction of the price. 
2. Unique: Many people simply like the idea of wearing a “space diamond.” They find its origins cool and appreciate having a piece of jewelry with an interesting backstory.
3. Low maintenance: Given its superb durability, moissanites are low maintenance and ideal for everyday wear. 
4. The Look: Because of its refractive index, moissanites display slightly more “fire” than diamonds. This results in a more intense and colorful sparkle. However, this difference isn’t always noticeable to the untrained eye. In fact, most lay people can’t distinguish a moissanite from a diamond unless you tell them. 

Because of its superb durability, unique beauty, and versatility, moissanite stands on its own merit as a wonderful choice for fine jewelry pieces of every kind.