3 Carat Diamond Engagement Rings
3 Carat Diamond Engagement Rings, Built Your Way
Every ring on this page can be a 3 carat ring: choose the setting you love, then pair it with a certified 3 carat lab grown diamond from our own inventory. You pick the exact stone, not a lookalike, and we hand-set and finish the ring in New York.
What a 3 Carat Diamond Ring Costs
The finished ring is the setting plus the stone, and with lab grown diamonds the math is friendlier than most shoppers expect. Settings start at $950. As of November 2026, certified 3 carat lab grown diamonds start at $1,210, and a well specified stone, G colour, VS1 clarity, Excellent cut, starts at $1,489. Every stone's exact price is listed in our loose 3 carat collection.
Wearing 3 Carats
A 3 carat center stone reads about 9.3mm face-up, and elongated shapes like oval, marquise, and our signature cuts look even larger per carat. See how each size wears on the hand in our carat size comparison, or compare shapes in the Diamond Shapes Guide.
Settings That Carry a 3 Carat Stone
Larger centers reward secure, balanced settings: a solitaire keeps all eyes on the stone, a hidden halo adds sparkle without competing with it, a three stone frames it classically, and a bezel gives maximum security for everyday wear. Every setting comes in platinum, 14k or 18k white and yellow gold, or 14k rose gold.
Hand-Set in New York
Every ring is hand-set and finished in New York's Diamond District, and you can see 3 carat stones and settings side by side at our showroom at 36 West 44th Street. Your purchase includes free insured shipping, a lifetime manufacturing warranty, free 30-day returns, and complimentary resizing within the first six months.
FAQ's
The setting plus the stone. Settings start at $950, and certified 3 carat lab grown diamonds start at $1,210 (a G colour, VS1 clarity, Excellent cut stone from $1,489). Every stone's price is listed in our loose 3 carat collection.
Yes. Lab grown diamonds are chemically, physically, and optically identical to mined diamonds, with the same hardness of 10 on the Mohs scale, and every stone is independently certified by IGI or GIA.
A round 3 carat reads about 9.3mm face-up. Elongated shapes like oval, marquise, and our signature cuts spread their weight across a longer outline, so they look larger per carat.
Yes. Pick any setting on this page, then choose the specific certified stone from over 400,000 lab grown diamonds in our inventory. Every ring is hand-set and finished in NYC.
Solitaires, hidden halos, three stone designs, and bezels all carry a larger center well; the bezel adds the most security for everyday wear. Every setting is available in platinum, 14k or 18k white and yellow gold, or 14k rose gold.
Most rings are made to order and ship within 7 to 14 business days. Some settings may require additional time depending on complexity, and every product page shows its own ship-by estimate.
Every ring includes a lifetime manufacturing warranty, free insured shipping, free 30-day returns, and complimentary resizing within the first six months.
Yes. Our showroom is at 36 West 44th Street in Manhattan's Diamond District, where you can compare stones and settings side by side before you decide.