Prices for Synthetic diamonds from 0.01 to 20.00 Carats updated September 2017
Source: Antwerp World Diamond Centre. 

Find our where to buy Synthetic diamonds (also named Lab grown, Man made, Cultured diamonds)
1.00 mm
$ 0.02

1.25 mm
$ 0.03

1.50 mm
$ 0.04

1.75 mm
$ 0.05

2.00 mm
$ 0.06

2.25 mm
$ 0.07

2.50 mm
$ 0.08

2.75 mm
$ 0.08

3.00 mm
$ 0.09

3.25 mm
$ 0.11

3.50 mm
$ 0.12

3.75 mm
$ 0.15

4.00 mm
$ 0.16

4.25 mm
$ 0.23

4.50 mm
$ 0.24

4.75 mm
$ 0.27
​5.00 mm
$ 0.28

5.25 mm
$ 0.35

5.50 mm
$ 0.36

5.75 mm
$ 0.37

6.00 mm
$ 0.38

6.25 mm
$ 0.46

6.50 mm
$ 0.47

6.75 mm
$ 0.54

7.00 mm
$ 0.55

7.25 mm
$ 0.64

7.50 mm
$ 0.65

7.75 mm
$ 0.72

8.00 mm
$ 0.73

8.25 mm
$ 1.02

8.50 mm
$ 1.03

8.75 mm
$ 1.04
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This page was last updated on: September 5, 2017
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analysis of your needs
​9.00 mm
$ 1.05

9.25 mm
$ 1.06

9.50 mm
$ 1.07

9.75 mm
$ 1.08

10.00 mm
$ 1.09

11.00 mm
$ 1.76

12.00 mm
$ 1.95

13.00 mm
$ 2.88

14.00 mm
$ 4.16

15.00 mm
$ 5.44
Buy synthetic diamonds, Made in China: 
https://www.alibaba.com/showroom/synthetic-diamond-price-per-carat.html 
Actual Prices for synthetic diamonds. Price per piece in US $