USD /
Shipping to:
Currency:
USD
  • Wishlist
  • Compare
  • Contact Us
  • NY +1 (646) 898 2098
  • LA +1 (310) 920 6656
  • Contact
  • CALL NY
  • CALL LA
  • Create an Account
Toggle Nav
BOOK AN APPOINTMENT
WISHLIST LOGIN CART ( )
Menu
Settings
USD /
Shipping to:
Currency:
USD
Book an appointment
  • https://www.revediamonds.com/us/3-carat-heart-shaped-lab-grown-diamonds

3 Carat Heart Shaped Lab Grown Diamonds

Select a 3ct Heart Shaped lab grown diamond from the thousands of certified lab diamonds in our collection.
BOOK A DIAMOND VIEWING
Call NY today: +1 (646) 898 2098 Call LA today: +1 (310) 920 6656

Looking To Buy a 3 Carat Heart Shaped Lab Grown Diamond?

Search through our inventory below or book a visit to our New York or Los Angeles showrooms.

Lab Grown Diamonds
Coloured Diamonds

  • Round Round

  • Princess Princess

  • Cushion Cushion

  • Emerald Emerald

  • Pear Pear

  • Oval Oval

  • Marquise Marquise

  • Radiant Radiant

  • Asscher Asscher

  • Heart Heart

  • European Cut European Cut

  • Old Miner Old Miner

  • Rose Rose

  • Briolette Briolette

  • Bullets Bullets

  • Calf Calf

  • Flanders Flanders

  • Half Moon Half Moon

  • Hexagonal Hexagonal

  • Kite Kite

  • Lozenge Lozenge

  • Octagonal Octagonal

  • Pentagonal Pentagonal

  • Shield Shield

  • Square Square

  • Star Star

  • Tapered Baguette Tapered Baguette

  • Baguette Baguette

  • Tapered Bullet Tapered Bullet

  • Trapezoid Trapezoid

  • Triangular Triangular

  • Trilliant Trilliant

  • Other

Your order

Diamond:
Carat
Colour
Clarity
Cut
Polish
Symmetry
Fluor
Lab
TYPICAL HIGH STREET PRICE:
Total price:
Total price:
In Stock
In stock
FREE SHIPPING
Contact us to inquire about delivery options or to hold at a Fedex location.
Filter

3 Carat Heart Shaped Lab-Grown Diamond

Make a heartfelt impression with a 3 carat heart shaped lab-grown diamond. Loved for its unique silhouette and romantic symbolism, the heart shape offers a blend of emotional meaning and radiant brilliance—making it a favorite for engagement rings, pendants, and one-of-a-kind fine jewelry designs.

What Is a Lab-Grown Diamond?

Lab-grown diamonds are authentic diamonds formed in controlled lab environments using advanced HPHT (High Pressure High Temperature) or CVD (Chemical Vapor Deposition) methods. These diamonds are chemically, optically, and physically identical to natural diamonds—so much so that expert gemologists need specialized tools to differentiate them.

Lab-grown stones cost 30% to 50% less than mined equivalents and support eco-friendly, conflict-free sourcing.

Every lab-grown diamond from RÊVE Diamonds is independently certified, most often by IGI or GIA, for quality and assurance.

If you need assistance selecting your 3 Carat Heart Shaped 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 heart shaped lab-grown diamond cost?

Prices typically range from $3,000 to $25,000 based on cut quality, color, clarity, and certification.

-How much does a 3 carat heart shaped diamond weigh?

Roughly 0.6 grams, or 600 milligrams.

-How large is a 3 carat heart shaped diamond?

Expect these size ranges:

Length: 9.0 mm – 11.5 mm (avg. 10.3 mm)

Width: 9.0 mm – 11.0 mm (avg. 10.0 mm)

Depth: 5.0 mm – 7.2 mm (avg. 6.2 mm)