Loose Diamonds

3 Carat G Color Lab Grown Diamonds

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.

Carat · 3.00 – 3.49 ct
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ct
Color
Price · $100 – $1,400,000
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Cut grade only applies to Round diamonds.
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3 Carat G Color Lab-Grown Diamond

Make a graceful and sophisticated statement with a 3 carat G color lab-grown diamond. Loved for its near-colorless appearance and bright sparkle, the G color offers excellent value without sacrificing visual beauty—ideal for both classic and contemporary high-end jewelry designs.

What Is a Lab-Grown Diamond?

Lab-grown diamonds are genuine diamonds developed in advanced lab settings using either High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD) techniques. These stones are physically, optically, and chemically identical to mined diamonds—experts need special tools to distinguish between them.

Lab-created diamonds are typically 30% to 50% more affordable than natural diamonds, while being a more ethical and sustainable choice.

At RÊVE Diamonds, our lab-grown diamonds are certified by trusted institutions such as IGI or GIA, ensuring quality and authenticity.

If you need assistance selecting your 3 Carat G Color Lab-Grown Diamond, contact us today:

New York: +1 (646) 898 2098

Los Angeles: +1 (310) 920 6656

Or chat with us now!

Frequently Asked Questions

How much does a 3 carat G color lab-grown diamond cost?

Prices range from $3,000 to $25,000 depending on the 4 Cs (Carat, Cut, Color, Clarity).

How much does a 3 carat G color diamond weigh?

Approximately 0.6 grams or 600 milligrams.

How large is a 3 carat G color diamond?

For an Asscher cut diamond, expect dimensions in this range:

Length: 8.5 mm – 12.5 mm (average 9.8 mm)

Width: 8.3 mm – 11.2 mm (average 9.5 mm)

Depth: 4.9 mm – 7.5 mm (average 6.5 mm)

Explore Our Collections

3 Carat G Color Lab-Grown Diamond | Rêve Diamonds