Lab Diamond Heart

This collection holds loose heart shape lab grown diamonds, sold as single stones rather than set in jewelry. Most stones are around one carat, with larger fancy color hearts of three to four carats.

Colors and clarity

Colorless hearts are mostly D, E or F color, with a few G, H and I stones, and clarity from VVS2 to SI1. Fancy color hearts come in vivid and intense blue, green, pink and red, plus greenish blue and pinkish orange tones. Each listing names the carat weight, color and clarity of that stone in its title, and some also name a grading report.

How to choose a heart shape stone

A good heart has two even lobes, a clear cleft between them and a sharp, centered point. Hearts show their shape best at around one carat and above, where the outline is easy to see. Their romantic shape suits a pendant as well as a ring: see our lab diamond pendants. Looking for a finished ring instead? Browse our lab diamond engagement rings, solitaire rings and halo rings.

FAQs

Are these real diamonds?

Yes. Lab grown diamonds are real diamonds with the same chemistry as mined ones. Our comparison guide explains how they differ from moissanite.

How big will the stone look?

Our diamond size chart shows typical face-up sizes by carat weight, which helps you compare stones.

Is the stone set in jewelry?

No. These are loose stones sold on their own. Our support team (10 am to 7 pm) can answer questions about a stone before you order.