Heart lab-grown diamonds
A heart cut is a brilliant cut in a heart outline, best from about one carat up. Lab-grown stones cost far less per carat, so many buyers choose a larger size or a higher colour.
| Carat | Colour D-E | Colour F-G | Colour H-I |
|---|---|---|---|
| 0.5 ct | £160 | £140 | £120 |
| 0.75 ct | £220 | £200 | £170 |
| 1.0 ct | £300 | £270 | £230 |
| 1.25 ct | £390 | £340 | £300 |
| 1.5 ct | £490 | £440 | £380 |
| 2.0 ct | £700 | £620 | £540 |
| 2.5 ct | £920 | £820 | £710 |
| 3.0 ct | £1,200 | £1,050 | £900 |
| 4.0 ct | £1,750 | £1,550 | £1,350 |
| 5.0 ct | £2,450 | £2,150 | £1,850 |
Recommended proportions
| Length-to-width ratio | 0.90-1.10 |
|---|---|
| Table | 56-62 % |
| Depth | 57-62 % |
| Cut | Excellent / Ideal |
Guide ranges for an excellent-looking stone; we check them on every report before we offer you a diamond.
Settings for this shape
Questions buyers ask
Are lab-grown diamonds real diamonds?
Yes. A lab-grown diamond is pure crystallised carbon with the same hardness, refractive index and chemical structure as a mined diamond. Gem labs such as IGI and GIA grade them with the same colour, clarity and cut scales, and the report states that the stone is laboratory-grown.
How much cheaper is lab-grown than natural?
For the same size and quality, a lab-grown diamond usually costs a small fraction of a natural one. On our current price list a 1 carat round F-G VS lab-grown diamond is £320 and a comparable GIA-graded natural diamond is £3,900.
Which certificate comes with my diamond?
Lab-grown centre stones and loose stones come with an IGI report. Natural diamonds of 0.30 ct and above come with a GIA report. The report number is laser-inscribed on the girdle, and we send you the report before we charge.
Other shapes
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