When choosing a moissanite piece of jewelry, the carat size may be the trickiest choice. How big is 1 carat really? And won't 3 carats look too big? Good news: because moissanite costs a fraction of a diamond, you don't have to compromise on size — you choose purely based on what looks good. In this guide, we show you the size of the stone per carat, and which size best suits a ring, necklace, or earrings.
How big is moissanite per carat?
With diamonds, 'carat' refers to weight. With moissanite, we mainly look at the diameter in millimeters, because that's what you actually see. Below you can see the stone diameter per carat for a round, brilliant-cut stone.
Carat Guide — how big is the stone?
Stone diameter per carat (round cut).
Dimensions are indicative; the display on your screen may vary slightly.
Which carat size suits you?
1 carat — subtle and elegant
At approximately 6.5 mm, 1 carat is the classic, refined choice. Perfect for those who love subtlety, for a timeless solitaire necklace, or for elegant stud earrings you can wear every day. Also a popular size for a modest engagement ring.
2 carat — the popular statement size
Around 8 mm, 2 carats definitely stand out without being over-the-top. This is many customers' favorite size for an engagement ring or a necklace that adds just that little extra sparkle. The golden mean between subtle and statement.
3 carat — luxurious and striking
With over 9 mm, 3 carats truly make an impression. Ideal if you love glamour and want an eye-catcher. On the hand, it looks generous and luxurious, while its light weight makes moissanite comfortable to wear.
5 carat — maximum sparkle
At 11 mm, 5 carats are a real eye-catcher. For those who dare to stand out and want the full, diamond-like sparkle — for a fraction of what a diamond of this size would cost.
Tips per piece of jewelry
Rings: 1 to 3 carats are most popular. Do you have slender fingers? Then 1–2 carats already look substantial. If you want a statement engagement ring, feel free to choose 2–3 carats. View all moissanite rings.
Necklaces: a solitaire pendant of 1–2 carats is versatile and wearable with any outfit; 3 carats draw extra attention. View the necklaces.
Earrings: here, the size applies per earring. 1 carat per ear is timeless and subtle, 2 carats per ear sparkle abundantly. View the earrings.
Moissanite vs. diamond: the same look, a fraction of the price
The beauty of moissanite is that you don't have to make concessions in terms of size. A 3-carat diamond can easily cost thousands of euros; a moissanite of the same size and sparkle is available at Titanix for a fraction of that — in genuine 925 sterling silver and with a GRA certificate. Still undecided between moissanite and diamond? Read our page Moissanite vs. Diamond.
Any more questions about sizes or materials? Check our frequently asked questions or send us a message — we're happy to help.