Rectangular Cushion Cut Diamond Size Chart

0.08 - 0.89 cts

RECTANGULAR CUSHION CARAT WEIGHT	RECTANGULAR CUSHION MM LENGTH	RECTANGULAR CUSHION MM WIDTH
0.08 - 0.11 ct.	2.90 - 3.10 mm.	2.30 - 2.40 mm.
0.10 - 0.13 ct.	3.20 - 3.40 mm.	2.40 - 2.50 mm.
0.12 - 0.15 ct.	3.30 - 3.50 mm.	2.40 - 2.60 mm.
0.13 - 0.16 ct.	3.50 - 3.60 mm.	2.60 - 2.80 mm.
0.16 - 0.19 ct.	3.70 - 3.80 mm.	2.90 - 3.10 mm.
0.17 - 0.20 ct.	3.90 - 4.00 mm.	2.90 - 3.10 mm.
0.21 - 0.22 ct.	4.10 - 4.20 mm.	3.10 - 3.20 mm.
0.23 - 0.27 ct.	4.30 - 4.40 mm.	3.20 - 3.30 mm.
0.28 - 0.36 ct.	4.40 - 4.50 mm.	3.30 - 3.50 mm.
0.36 - 0.42 ct.	4.70 - 4.80 mm.	3.40 - 3.80 mm.
0.43 - 0.48 ct.	4.90 - 5.00 mm.	3.60 - 3.90 mm.
0.49 - 0.52 ct.	5.00 - 5.20 mm.	4.00 - 4.20 mm.
0.52 - 0.55 ct.	5.20 - 5.40 mm.	4.00 - 4.20 mm.
0.60 - 0.67 ct.	5.40 - 5.60 mm.	4.30 - 4.50 mm.
0.70 - 0.75 ct.	5.60 - 5.70 mm.	4.50 - 4.60 mm.
0.80 - 0.89 ct.	5.70 - 6.00 mm.	4.50 - 4.60 mm.

Ava Diamonds

0.90 - 5.25 cts

RECTANGULAR CUSHION CARAT WEIGHT	RECTANGULAR CUSHION MM LENGTH	RECTANGULAR CUSHION MM WIDTH
1.00 - 1.15 ct.	6.50 - 6.80 mm.	4.90 - 5.10 mm.
1.20 - 1.27 ct	6.80 - 7.30 mm.	5.40 - 5.70 mm.
1.30 - 1.45 ct	7.00 - 7.40 mm.	5.80 - 5.90 mm.
1.50 - 1.60 ct	7.30 - 7.90 mm.	5.80 - 6.20 mm.
1.65 - 1.80 ct	7.50 - 8.10 mm.	6.10 - 6.50 mm.
2.00 - 2.30 ct	8.00 - 8.60 mm.	6.40 - 6.80 mm.
2.40 - 2.60 ct	8.50 - 9.00 mm.	6.90 - 7.20 mm.
2.70 - 2.90 ct	8.90 - 9.40 mm.	7.10 - 7.30 mm.
3.00 - 3.30 ct	9.20 - 9.80 mm.	7.30 - 7.70 mm.
3.40 - 3.60 ct	9.40 - 10.00 mm.	7.60 - 7.90 mm.
3.70 -3.90 ct	9.90 - 11.00 mm.	8.00 - 8.40 mm.
4.00 - 4.20 ct	10.00 - 11.00 mm.	8.10 - 8.50 mm.
4.40 - 4.70 ct	10.70 - 11.50 mm.	8.40 - 8.70 mm.
5.00 - 5.25 ct	11.00- 11.70 mm.	8.70 - 9.10 mm.
0.90 - 0.98 ct.	6.10 - 6.40 mm.	4.70 - 4.90 mm.

Ava Diamonds

What are the Ideal Proportions of a Rectangular Cushion Cut?

Much like its squared rendition, the Rectangular Cushion Cut Diamond requires some planning ahead in order to get the maximum return on your investment. The following guide should prove useful in gauging the ideal, or recommended proportions for elongated cushion shaped diamonds including depth and table, and ratios.

What is the Recommended Diamond Depth and Table for the Rectangular Cushion Cut?

	EXCELLENT	VERY GOOD	GOOD
Table - %	61 %- 69%	57% - 60% or 70% - 72%	54% - 56% or 73% - 74%
Depth - %	61% - 67%	59% - 59.9% or 70.1% - 74%	54% - 56.9% or 74.1% - 78%
Girdle	Very Thin to	Slightly Thick	Very Thin to Thick
Culet	None	Very Small	Small

What is the Recommended Rectangular Cushion Cut Diamond Length to Width Ratio?

The length to width ratio in Rectangular Cushion Shaped Diamonds is incredibly useful as a means to gauge pieces that are worth looking further into, and avoiding ones that aren’t. Of course, as useful as knowing the recommended ratio is, it works best when combined with good old fashioned eye test, that will never be obsolete.

	EXCELLENT	VERY GOOD	GOOD
Length To Width Ratio	1.20-1.30	1.15 - 1.25 or 1.29 - 1.35	1.10 - 1.15 or 1.36 - 1.40