GRA Certification

Every sparkle comes with proof.

Every moissanite stone in the Stella Nera catalog ships with an independent certificate from GRA (Gem Research Authority). It's the document that turns a beautiful stone into a verified one.

What is GRA?

GRA is an independent gemological laboratory that grades and certifies moissanite. Each certificate is tied to a specific stone and includes:

• Stone identification — verified as genuine moissanite
• Carat weight — the exact size of the stone
• Cut and shape — round brilliant, pear, oval, etc.
• Color grade — typically D-E-F (the highest grades, equivalent to colorless diamond)
• Clarity grade — typically VVS (very, very slightly included)
• Unique certificate number — verifiable independently

Why it matters

Moissanite has become the most popular diamond alternative in the world, which means the market is full of unverified stones. A certificate is the difference between "trust me" and "here's the proof".

When you buy from Stella Nera, you're not just buying a piece of jewelry. You're buying a stone that's been independently graded — the same kind of documentation a jeweler would expect for a fine diamond.

How to read your certificate

Your GRA certificate arrives with every piece, inside the packaging. The certificate number on it can be cross-referenced if you ever need verification for insurance, resale, or peace of mind.

What about diamond testers?

Moissanite passes most consumer diamond testers — not because it's fake, but because both stones conduct heat similarly. This is one of the reasons moissanite is considered the closest visual and physical alternative to a diamond. Specialized moissanite testers exist for jewelers who need to distinguish between the two.

Either way, your GRA certificate is the definitive answer: this is moissanite, this is its grade, this is the proof.