Marquise lab-grown diamonds
A marquise cut is a long boat-shaped brilliant that gives the largest face-up size per carat. Lab-grown stones cost far less per carat, so many buyers choose a larger size or a higher color.
| Carat | Color D-E | Color F-G | Color H-I |
|---|---|---|---|
| 0.5 ct | $200 | $180 | $150 |
| 0.75 ct | $280 | $250 | $210 |
| 1.0 ct | $380 | $340 | $290 |
| 1.25 ct | $480 | $430 | $370 |
| 1.5 ct | $620 | $550 | $470 |
| 2.0 ct | $880 | $780 | $670 |
| 2.5 ct | $1,150 | $1,050 | $890 |
| 3.0 ct | $1,500 | $1,300 | $1,150 |
| 4.0 ct | $2,200 | $1,950 | $1,700 |
| 5.0 ct | $3,050 | $2,700 | $2,350 |
Recommended proportions
| Length-to-width ratio | 1.75-2.25 |
|---|---|
| Table | 53-63 % |
| Depth | 58-62 % |
| Cut | Excellent / Ideal |
Guide ranges for an excellent-looking stone; we check them on every report before we offer you a diamond.
Questions buyers ask
Are lab-grown diamonds real diamonds?
Yes. A lab-grown diamond is pure crystallized 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 color, 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 $420 and a comparable GIA-graded natural diamond is $5,200.
Which certificate comes with my diamond?
Lab-grown center 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
Round · Oval · Emerald · Cushion · Princess · Pear · Radiant · Heart · Asscher