Are you looking to buy a lab-grown loose diamond or engagement ring? Select from the thousands of certified diamonds in our collection. Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds — available at 50–70% less than the cost of a naturally mined stone.
Make a graceful and eye-catching statement with a 3 carat marquise cut lab-grown diamond. Known for its elongated, pointed shape and elegant curves, the marquise cut enhances brilliance while creating the illusion of a longer, slimmer finger—perfect for distinctive engagement rings and bespoke jewelry designs.
Lab-grown diamonds are authentic diamonds created under controlled conditions using either High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD). They are chemically, visually, and structurally identical to natural diamonds—so much so that expert gemologists use advanced tools to distinguish them.
Choosing lab-grown means you’ll save 30% to 50% compared to mined diamonds, while also making a sustainable and ethical purchase.
All lab-grown diamonds from RÊVE Diamonds are independently certified, most frequently by IGI or GIA, ensuring full quality assurance and confidence.
If you need assistance selecting your 3 Carat Marquise Cut Lab-Grown Diamond, contact us today:
Los Angeles: +1 (310) 920 6656
Or chat with us now!
Prices range from $3,000 to $25,000 depending on the 4 Cs—cut, color, clarity, and carat.
It weighs approximately 0.6 grams or 600 milligrams.
Typical size dimensions include:
Length: 13.0 mm – 15.5 mm (avg. 14.3 mm)
Width: 6.5 mm – 8.5 mm (avg. 7.5 mm)
Depth: 4.2 mm – 6.0 mm (avg. 5.2 mm)
