Guides
Buying loose diamonds online means choosing a specific certified stone, not a setting and not a grade range.
A real listing has a carat weight to the hundredth, a shape, color, clarity, a lab, a price, and images of that stone. Rounds should show a cut grade. The certificate should open from the page.
If any of those are missing, you are looking at a category, not a diamond you can buy.
Choose lab-grown or natural first, because that choice sets the price band. Then shape, then carat, then a cut floor for rounds. Only then tighten color, clarity, and budget.
Shortlist three stones. Compare their reports and videos. The winner is the one that looks right at your budget, not the one with the highest letter grades.
On Carat Mate you request the diamond. The team confirms availability and can walk through the stone before you pay. That step exists so the certificate you read is the diamond you receive.
Prices are USD. The catalog is shared across the United States, Canada, the UAE, London, and Australia.
Loose diamonds ship insured to those same markets, with the lab report. Wrong-item returns may be considered within 3 days of delivery, subject to review.
A loose diamond still needs a setting if you want a ring. Buying the stone online does not force you to buy the mounting from the same page.
Carat Mate lists certified loose diamonds for shoppers in the United States, Canada, the UAE, London, and Australia. Prices are in USD everywhere. We ship to the United States, Canada, the UAE, London, and Australia.
