Sell loose diamonds
Loose stones compare cleanly because their quality characteristics are documented. That is exactly what works in your favour when several buyers bid at once.
- Certificate details carried straight across
- Sharper offers thanks to clear characteristics
- Multiple stones submitted individually
How CaratBid works
- 1
Describe your diamond
Carat, shape, colour, clarity, certificate and photos in a few guided steps.
- 2
Buyers are matched
We present your stone to verified buyers whose criteria fit it.
- 3
Offers arrive
Independent offers land side by side in your private dashboard.
- 4
You decide
Accept an offer, ask questions, or decline them all. No obligation.
Describe your diamond
A few details are enough to put verified buyers in competition for your stone.
Step 1 of 6 — Diamond
- Diamond
- Certificate
- Grading
- Photos
- Location
- Contact
Tell us about your diamond
For example 2.04
Your protection
- Verified professional buyers only
- Your contact details are never shared
- Free to submit, free to decline
- Documents and photos stored privately
CaratBid is a marketplace that presents your diamond to verified buyers. It does not buy diamonds, does not value them and does not guarantee that an offer will be made.
Frequently asked questions
- What details do I need?
- Carat, shape, colour, clarity and the report number if you have one.
- Possible without a certificate?
- Yes, with good photos and accurate details.
- Are small stones accepted?
- Yes, though demand can be thinner for very small stones.