Rough
Uncut stones for cutters, jewellers and wholesale buyers. Terms depend on the stone and are confirmed by a manager.
Cut gemstones and rough
Rare stones. Proven quality.
We source stones for private buyers, jewellers, wholesalers and investors. Tell us what you need, and a manager will offer options.
Popular stones
Click a stone, then choose the cut shape in the next steps.
Sapphire
Blue and fancy-colour corundum. Hardness 9 on the Mohs scale, made for everyday wear.
Ruby
Red corundum, valued for a saturated colour without brown.
Emerald
Green beryl. Natural inclusions are normal for emerald.
Spinel
Red, pink, yellow, blue and grey. For centuries it was mistaken for ruby.
Tourmaline
One of the widest colour ranges of any gem, from pink to green and teal.
Aquamarine
Blue beryl with a clear, calm sea colour.
How the selection works
Request
A few questions: which stone and cut shape. Any question can be skipped.
Options
A manager contacts you the way you prefer and selects stones for your purpose.
Details
We go through the details of the selected stones. If you need a laboratory report, we agree on it in advance.
Deal
Price, payment and delivery are agreed with the manager. All amounts are in US dollars.
About Margems
Margems works with cut gemstones and rough. We source stones for private buyers, jewellers, wholesale clients and investors.
Why clients trust us
A stone is judged by characteristics that can be checked.
Certificates
If you need a certificate, we agree on the laboratory in advance: GIA, GRS or another.
Quality
Weight, size, colour and clarity are discussed before the deal, with photos and video.
Cut
We match the cut shape and quality to the piece: a ring, earrings or a collection.
For investors
Buying gemstones as tangible assets. No promises of returns: we talk about the stone, its documents and the terms of the deal.
Contacts
Message us in any messenger or send a request - a manager will reply using your contact details.