0.3 carat lab-grown diamond price
A 0.3 carat lab-grown diamond costs £45 at Vibama Jewels: our wholesale rate is £150 per carat for every shape, colour and clarity, with an IGI report. A natural diamond of the same size costs about £465 for the same grades.
Example: a 0.50 ct stone costs £75, a 2.00 ct stone £188. Prices in GBP, before shipping, insurance and import charges.
Lab-grown wholesale rates: November 2026 · Updated · Diamond price index →
| Below 1 carat | £150 per carat |
|---|---|
| 1 carat and above | £94 per carat |
Questions buyers ask
How much does a 0.3 carat lab-grown diamond cost?
A 0.3 carat lab-grown diamond costs £45 at Vibama Jewels: our wholesale rate is £150 per carat for every shape, colour and clarity, with an IGI report. A natural diamond of the same size costs about £465 for the same grades.
What is your wholesale price for lab-grown diamonds?
£150 per carat for stones below 1 carat and £94 per carat for stones of 1 carat and above, for every shape, colour and clarity on our list, with an IGI report.
Does a 0.3 carat lab-grown diamond come with a certificate?
Yes. Every lab-grown diamond we sell at this size comes with a grading report from IGI, and we send you the report and a video of the exact stone before you pay.
Prices by carat
0.3 ct · 0.5 ct · 0.75 ct · 1 ct · 1.25 ct · 1.5 ct · 2 ct · 2.5 ct · 3 ct · 4 ct · 5 ct · Natural 0.3 ct →