Moissanite is a gemstone originally discovered in a meteor crater by Nobel Prize-winning scientist Henri Moissan in 1893. Because the natural version is extremely rare, the moissanite used in jewelry today is lab-created — grown under controlled conditions to match the natural stone's structure with flawless consistency.

Visually, it's almost impossible to distinguish from a diamond. It actually has more brilliance and fire than a diamond (a higher refractive index), making it sparkle more intensely in the light.

Moissanite also ranks 9.25 on the Mohs hardness scale (diamond is 10), making it one of the most durable gemstones available — perfect for everyday wear, including rings, studs, and necklaces you won't take off.

Visual difference: moissanite has more fire (rainbow sparkle) than diamond. Most people — even jewelers — can't tell them apart without professional equipment.

Price difference: moissanite typically costs 10–20% of what you'd pay for a diamond of the same size and quality. That's why you can have a fully stacked ring collection for the price of a single diamond band.

Durability: moissanite is 9.25/10 on the Mohs scale (diamond is 10/10). For daily wear, the difference is essentially zero.

Ethics: all MOISS moissanite is lab-created, meaning no mining, no environmental damage, and no supply-chain ethics issues.

GRA stands for Gemological Research Association — an independent lab that tests and certifies the authenticity and grade of moissanite and diamond gemstones.

A GRA certificate confirms the color grade, clarity, cut, and carat weight of your stone. Every MOISS piece ships with its authentic GRA certificate in the box — so you always have a paper proof of what you're wearing.

Not sure of your size? Here's the easiest way to measure at home:

• Wrap a thin strip of paper or string around the base of the finger where you'll wear the ring.
• Mark the point where the strip overlaps.
• Measure the length in millimeters — that's your finger circumference.
• Compare with a standard ring size chart (widely available online).

If you're between sizes, we recommend sizing up. Fingers tend to swell slightly in warm weather or at the end of the day.

Moissanite and sterling silver are both durable, but a few habits keep your ring looking new for years:

• Remove before showering, swimming, or working out — chlorine and sweat can dull the finish over time.
• Clean gently with warm water and mild soap, then dry with a soft cloth.
• Store in the pouch or box your ring came in, away from other metal jewelry that could scratch it.
• Put it on last when getting ready — after perfume, lotions, and hairspray.
• Avoid wearing during heavy manual work to prevent impact damage to the bezel.

Shipping: orders ship worldwide. Free shipping on every order. Standard delivery takes 10–20 business days depending on your location.

Returns: you have 30 days from the delivery date to request a return. Items must be unworn and returned with the GRA certificate and original packaging.

Full details in our Shipping Policy and Return Policy.