GIA · IGI certificates
A diamond to cherish for a lifetime
We source our stones directly from the international diamond wholesale market. Each has an independent GIA or IGI certificate — thousands of natural and lab-grown diamonds, with prices based on the delivery country.
Loose diamonds
Find your stone — certified, with our guidance.
- Natural diamondsMined, in every shape and size.
Lab-grown diamondsThe same hardness and brilliance — a larger stone for the same budget.
Bespoke jewellery
Design jewellery around your chosen diamond.
Engagement ringsSetting, step by step: head, band, metal and diamond.
Bracelets and earringsTennis bracelets and stud earrings with certified diamonds.
Certification · knowledge · care
A clear, personal way to buy diamonds
Diamond Supply was created to make buying certified diamonds simpler and more transparent — without showroom pressure or guesswork about what you are paying for.
We follow three principles: independent certification, transparent pricing and personal support — from your first question to delivery. We source stones directly from the international wholesale market and show the full certificate details for each one.
Every diamond has been assessed by gemmologists at the independent GIA or IGI laboratory. You can check the certificate number yourself before paying.
Meet us
- Independently assessedby gemmologists at GIA or IGI
- Knowledge first4C guide and a comparison of natural and lab-grown diamonds
- Personal supportby email and during a phone consultation
- GIA or IGI certificateEvery diamond comes with an independent laboratory certificate.
- Insured deliveryDelivered to you in person, insured for its full value.
- 14-day returnsDiamonds and ready-to-wear jewellery, with no reason required.
- Secure paymentsBLIK, Przelewy24, card — prices depend on the delivery country.
- Dispatched from the EUDelivery terms depend on the recipient’s country.
- Expert assistanceWe can advise you on choosing a stone and size.
- GIA certificate
- IGI certificate
- Natural diamonds
- Lab-grown diamonds
- Engagement rings
- Tennis bracelets
- Earrings
Just arrived
Selected diamonds
Lab-grown · IGI
2,01 ct · Oval · F · VS1
€1,420.00
Lab-grown · IGI
1,50 ct · Marquise · G · VS1
€1,267.39
Natural · IGI
1,03 ct · Oval · F · VVS1
€6,476.52
Natural · GIA
0,62 ct · Marquise · E · VVS2
€1,719.63
Lab-grown · IGI
1,17 ct · Oval · F · VS1
€753.73
Lab-grown · IGI
1,00 ct · Marquise · G · VS1
€679.29
Natural · IGI
0,80 ct · Oval · G · VVS1
€2,423.11
Natural · GIA
0,61 ct · Marquise · E · VS1
€1,939.23
Our standards
The pursuit of perfection
GIA and IGI certificates only
Two of the most respected laboratories — check the number yourself on their website.
Proportions, beyond the 4C
We look at the table, depth and symmetry to make sure the stone truly shines.
360° video instead of stock photos
See the exact diamond you are buying.
Diamonds
Choose a shape
Each shape handles light differently. Start with the one you like best.
Guide
Natural or lab-grown?
Both are real diamonds — their origin and price differ, not their appearance. The choice depends on what matters more to you: rarity or a larger stone within the same budget.
Shall we begin?
Time for your dream ring
Create it yourself in the builder or book a free phone consultation — we’ll help you choose the stone and setting.