1.5 carat lab-grown diamond price
A 1.5 carat lab-grown diamond costs between £300 and £640 at Vibama Jewels, depending on shape, colour and clarity. A round stone with F-G colour, VS clarity and a grading report from IGI costs £520. A natural diamond of the same size costs about £7,350 for the same grades.
At 1.5 carat the Cushion shape is the most affordable and the Round shape the most expensive.
Indicative prices, F-G colour, VS clarity, excellent cut: November 2026 · Updated · Diamond price index →
| Shape | Colour D-E | Colour F-G | Colour H-I |
|---|---|---|---|
| Round | £580 | £520 | £450 |
| Oval | £510 | £460 | £390 |
| Emerald | £480 | £420 | £360 |
| Cushion | £460 | £410 | £360 |
| Princess | £460 | £410 | £360 |
| Pear | £500 | £450 | £380 |
| Radiant | £480 | £420 | £360 |
| Marquise | £460 | £410 | £360 |
| Heart | £490 | £440 | £380 |
| Asscher | £480 | £420 | £360 |
| VVS1-VVS2 | VS1-VS2 | SI1 | |
|---|---|---|---|
| Colour D-E | £640 | £580 | £490 |
| Colour F-G | £570 | £520 | £430 |
| Colour H-I | £490 | £450 | £370 |
Questions buyers ask
How much does a 1.5 carat lab-grown diamond cost?
A 1.5 carat lab-grown diamond costs between £300 and £640 at Vibama Jewels, depending on shape, colour and clarity. A round stone with F-G colour, VS clarity and a grading report from IGI costs £520. A natural diamond of the same size costs about £7,350 for the same grades.
Which shape is cheapest at 1.5 carat?
At 1.5 carat the Cushion shape is the most affordable and the Round shape the most expensive.
Does a 1.5 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
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