Sell Loose Diamonds

Loose diamonds, meaning unmounted stones not set in a ring or other piece, are in some ways the simplest thing to sell and in other ways the most exposed. There is no setting to complicate the valuation, so the offer rests entirely on the stone. That makes documentation more important here than anywhere else.

We are a neutral platform. We do not buy diamonds. We connect sellers with professional national buyers and help you understand the market first.

What loose diamonds are worth

A loose diamond is priced on its four characteristics: cut, color, clarity, and carat weight. Because there is no setting and no brand to add value, the stone has to stand on its own grading. Like all diamonds, loose stones resell for 25% to 50% of retail, with the exact figure driven by quality and, above all, certification.

Why certification matters most for loose stones

With a ring, a buyer has a setting, sometimes a brand, and often paperwork to build confidence. With a bare stone, there is nothing but the diamond. That is why a grading report moves the offer more here than in almost any other situation.

A GIA report typically raises the offer by 15% to 25% compared to an uncertified stone of the same quality. Without it, a buyer has to either trust your description or pay to grade the stone before offering, and both push the number down. If your loose diamond is over half a carat and uncertified, obtaining a GIA report, usually $48 to $113, often returns more than it costs.

If your stone already has a report from EGL or IGI, know that professional buyers often re-grade those to stricter GIA standards, which can lower the working grade by a step or two. A GIA report avoids that discount.

Natural vs lab-grown

This distinction is sharp for loose stones because there is no setting to soften it. Natural loose diamonds hold 20% to 60% of retail. Lab-grown loose diamonds hold 10% to 30% and continue to lose value as production scales. If you are unsure which you have, a grading report will state it, and buyers will price accordingly either way.

How to sell

Loose diamonds are well suited to selling online by insured mail, since there is no setting to inspect in person and the valuation is driven by the report and the stone. You can also sell to a local diamond buyer who will evaluate the stone in front of you.

Whichever route you choose, get more than one offer. The spread between buyers on the same loose stone can be wide, and a second quote is the simplest protection you have.

Related guides

• To understand pricing in detail, see how much your diamond is worth.
• On why a report matters and how to get one, see GIA appraisal before selling.
• To sell safely by mail, read how to sell diamonds online.
• For the full overview, start with the main guide to selling diamonds.