Loose Diamonds

3 Carat Ideal Cut Lab Grown Diamond

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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Price · $100 – $1,400,000
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Cut grade only applies to Round diamonds.
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3 Carat Ideal Cut Lab-Grown Diamond

Elevate your style with a 3 carat Ideal Cut lab-grown diamond. Celebrated for its optimal proportions and intense fire, this cut maximizes brilliance—while premium craftsmanship guarantees symmetry, sparkle, and timeless elegance in every facet.

What Is a Lab-Grown Diamond?

Lab-grown diamonds are real diamonds created in a laboratory setting, using either the High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD) process. They are physically, chemically, and visually the same as mined diamonds—so much so that even expert gemologists require advanced equipment to tell them apart.

Choosing lab-grown means saving 30% to 50% over the price of a natural diamond, all while making an environmentally conscious and ethical decision.

All REVE Diamonds’ lab-grown stones are independently certified, most commonly by IGI or GIA.

If you need assistance selecting your 3 Carat Ideal Cut 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

What does Ideal Cut mean in a 3 carat lab-grown diamond?

Ideal Cut indicates that the diamond has been precisely proportioned to reflect maximum light. This results in outstanding brilliance, fire, and scintillation from every angle.

How much does a 3 carat Ideal Cut lab-grown diamond cost?

Prices typically range from $3,000 to $25,000, depending on the diamond’s cut, color, polish, symmetry, and certification. The Ideal Cut grade adds a premium to the price.

Is a 3 carat Ideal Cut lab-grown diamond better than a mined diamond?

Lab grown diamonds are chemically and optically identical to mined diamonds. A 3ct Ideal Cut lab grown diamond offers the same beauty and quality at a significantly lower price and with a lower environmental impact.

Will an Ideal Cut lab-grown diamond sparkle more than other cuts?

Yes. Ideal Cut diamonds are crafted to precise standards that allow optimal light return, giving them more brilliance and fire compared to lower-grade cuts like Very Good or Good.

What size is a 3 carat Ideal Cut lab-grown diamond?

A 3 carat diamond typically measures around 9.3 mm in diameter for a round cut or 9.5 mm x 9.5 mm for a square cut like Asscher. Cut grade does not change the physical dimensions.

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3 Carat Ideal Cut Lab-Grown Diamond | Rêve Diamonds