1.5-carat cushion-cut diamond – Size

1.5-carat cushion-cut diamonds

A 1.5-carat cushion-cut diamond measures approximately 6.3 × 6.3 mm. Its soft contours make it appear fuller on the hand than its edge lengths alone would suggest. A color grade of G to H and a clarity grade of VS2 to SI1 offer a good balance. Lab-grown diamonds are significantly more affordable than comparable natural diamonds.

Stone	Form			Purity		Pol.	Sym.	Fluorine.	Laboratory	Dimensions	L/W	Table	Depth	Delivery Time
360°	Pillow	1,81	E	VVS1	–	EX	EX	None	IGI	8.29 × 5.72 × 3.88	1,45	63 %	67,8 %	4–6 wt.	2.080 €
360°	Pillow	1,86	D	VVS1	–	EX	EX	None	IGI	8.38 × 5.88 × 3.92	1,43	66 %	66,7 %	4–6 wt.	1.570 €
360°	Pillow	1,63	E	VVS1	–	EX	EX	None	IGI	8.52 × 6.05 × 4.10	1,41	58 %	67,8 %	4–6 wt.	1.560 €
360°	Pillow	1,87	D	FL	–	EX	EX	None	IGI	8.31 × 5.99 × 3.90	1,39	67 %	65,1 %	4–6 wt.	3.460 €
360°	Pillow	1,86	E	VVS1	–	EX	EX	None	IGI	8.48 × 5.68 × 3.72	1,49	60 %	65,5 %	4–6 wt.	2.140 €
360°	Pillow	1,65	D	VVS1	–	EX	EX	None	IGI	8.15 × 5.64 × 3.62	1,45	62 %	64,2 %	4–6 wt.	1.610 €
360°	Pillow	1,87	E	VVS1	–	EX	EX	None	IGI	8.37 × 5.95 × 3.85	1,41	65 %	64,7 %	4–6 wt.	2.150 €
360°	Pillow	1,87	E	VVS1	–	EX	EX	None	IGI	8.34 × 5.95 × 3.94	1,40	64 %	66,2 %	4–6 wt.	2.150 €
360°	Pillow	1,77	D	VVS1	–	EX	EX	None	IGI	8.32 × 5.73 × 3.81	1,45	62 %	66,5 %	4–6 wt.	1.720 €
	Pillow	1,85	E	VVS1	–	EX	EX	None	IGI	8.53 × 5.85 × 3.86	1,46	66 %	66,0 %	4–6 wt.	2.130 €
360°	Pillow	1,50	F	VVS1	–	EX	EX	None	IGI	8.33 × 5.89 × 3.93	1,41	63 %	66,7 %	4–6 wt.	1.420 €
360°	Pillow	1,82	D	FL	–	EX	EX	None	IGI	8.69 × 6.35 × 4.31	1,37	61 %	67,9 %	4–6 wt.	3.370 €
360°	Pillow	1,70	D	VVS1	–	EX	EX	None	IGI	8.10 × 5.66 × 3.74	1,43	62 %	66,1 %	4–6 wt.	2.080 €
360°	Pillow	1,85	D	FL	–	EX	EX	None	IGI	7.59 × 7.36 × 4.59	1,03	52 %	62,4 %	4–6 wt.	3.430 €
360°	Pillow	1,78	E	VVS1	–	EX	EX	None	IGI	8.45 × 5.84 × 3.71	1,45	65 %	63,5 %	4–6 wt.	2.050 €
	Pillow	1,86	D	FL	–	EX	EX	None	IGI	7.78 × 7.41 × 4.49	1,05	57 %	60,6 %	4–6 wt.	3.450 €
360°	Pillow	1,64	E	VVS1	–	EX	EX	None	IGI	7.98 × 5.57 × 3.77	1,43	62 %	67,7 %	4–6 wt.	1.570 €
360°	Pillow	1,72	D	FL	–	EX	EX	None	IGI	8.00 × 6.44 × 4.31	1,24	62 %	66,9 %	4–6 wt.	3.190 €
360°	Pillow	1,74	E	VVS1	–	EX	EX	None	IGI	8.44 × 5.78 × 3.73	1,46	68 %	64,5 %	4–6 wt.	2.010 €
360°	Pillow	1,53	E	VVS1	–	EX	EX	None	IGI	8.06 × 6.02 × 4.02	1,34	61 %	66,8 %	4–6 wt.	1.470 €
360°	Pillow	1,92	D	FL	–	EX	EX	None	IGI	8.55 × 5.80 × 3.81	1,47	68 %	65,7 %	4–6 wt.	3.560 €
360°	Pillow	1,95	F	VVS1	–	EX	EX	None	IGI	8.41 × 5.88 × 3.98	1,43	65 %	67,7 %	4–6 wt.	2.150 €
360°	Pillow	1,94	D	VVS1	–	EX	EX	None	IGI	8.44 × 5.85 × 4.01	1,44	63 %	68,5 %	4–6 wt.	1.630 €
360°	Pillow	1,89	E	VVS1	–	EX	EX	None	IGI	8.48 × 5.93 × 3.89	1,43	65 %	65,6 %	4–6 wt.	2.170 €

360°

1.81 ct · Cushion

Colour E · VVS1

8.3 × 5.7 mm

2,080 €IGI

360°

1.86 ct · Cushion

Colour D · VVS1

8.4 × 5.9 mm

1,570 €IGI

360°

1.63 ct · Cushion

Colour E · VVS1

8.5 × 6.1 mm

1,560 €IGI

360°

1.87 ct · Cushion

Color D · FL

8.3 × 6.0 mm

3,460 €IGI

360°

1.86 ct · Cushion

Colour E · VVS1

8.5 × 5.7 mm

2,140 €IGI

360°

1.65 ct · Cushion

Colour D · VVS1

8.2 × 5.6 mm

1,610 €IGI

360°

1.87 ct · Cushion

Colour E · VVS1

8.4 × 6.0 mm

2,150 €IGI

360°

1.87 ct · Cushion

Colour E · VVS1

8.3 × 6.0 mm

2,150 €IGI

360°

1.77 ct · Cushion

Colour D · VVS1

8.3 × 5.7 mm

1,720 €IGI

1.85 ct · Cushion

Colour E · VVS1

8.5 × 5.9 mm

2,130 €IGI

360°

1.50 ct · Cushion

Colour F · VVS1

8.3 × 5.9 mm

1,420 €IGI

360°

1.82 ct · Cushion

Color D · FL

8.7 × 6.4 mm

3,370 €IGI

360°

1.70 ct · Cushion

Colour D · VVS1

8.1 × 5.7 mm

2,080 €IGI

360°

1.85 ct · Cushion

Color D · FL

7.6 × 7.4 mm

3,430 €IGI

360°

1.78 ct · Cushion

Colour E · VVS1

8.5 × 5.8 mm

2,050 €IGI

1.86 ct · Cushion

Color D · FL

7.8 × 7.4 mm

3,450 €IGI

360°

1.64 ct · Cushion

Colour E · VVS1

8.0 × 5.6 mm

1,570 €IGI

360°

1.72 ct · Cushion

Color D · FL

8.0 × 6.4 mm

3,190 €IGI

360°

1.74 ct · Cushion

Colour E · VVS1

8.4 × 5.8 mm

2,010 €IGI

360°

1.53 ct · Cushion

Colour E · VVS1

8.1 × 6.0 mm

1,470 €IGI

360°

1.92 ct · Cushion

Color D · FL

8.6 × 5.8 mm

3,560 €IGI

360°

1.95 ct · Cushion

Colour F · VVS1

8.4 × 5.9 mm

2,150 €IGI

360°

1.94 ct · Cushion

Colour D · VVS1

8.4 × 5.9 mm

1,630 €IGI

360°

1.89 ct · Cushion

Colour E · VVS1

8.5 × 5.9 mm

2,170 €IGI

All prices include 19% VAT · 14-day right of withdrawal · Stones are sold individually and may be sold out on short notice.

Carat	Approx. size (mm)
0.5 ct	approx. 4.4 × 4.4 mm
1 ct	approx. 5.5 × 5.5 mm
1.5 ct	approx. 6.3 × 6.3 mm
2 ct	approx. 7.0 × 7.0 mm
3 ct	approx. 8.0 × 8.0 mm

Carat

Approx. size (mm)

0.5 ct

approx. 4.4 × 4.4 mm

1 ct

approx. 5.5 × 5.5 mm

1.5 ct

approx. 6.3 × 6.3 mm

2 ct

approx. 7.0 × 7.0 mm

3 ct

approx. 8.0 × 8.0 mm

What to Look for in Cushion-Cut Diamonds

Check the faceted view and proportions

There is no single standard for the overall cut quality of cushion-cut diamonds. Pay attention to polish and symmetry, as well as table and depth. The facet pattern is also important: Coarse, angular facets produce large flashes of light, while the finer “crushed ice” pattern appears more granular and sparkly. Both are correctly cut, but the effect differs significantly, so it’s worth taking a look at a photo or video.

Color and Clarity in the Cushion Cut

The cushion cut retains body color slightly better than a round stone, which is why grades G through H are a good compromise, and grades F through G look more subdued at two carats and above. It is forgiving when it comes to clarity: the finely detailed faceting effectively conceals inclusions, and SI1 is often eye-clean, especially in “crushed ice” stones.

Size in millimeters per carat

A square cushion cut diamond weighing 1 ct measures approximately 5.5 × 5.5 mm; a 1.5 ct diamond measures approximately 6.3 × 6.3 mm; and a 2 ct diamond measures approximately 7.0 × 7.0 mm. The cushion cut has a relatively large amount of weight concentrated in its depth, so it appears slightly smaller from above than an oval of the same weight.

Frequently Asked Questions

How much larger is a 1.5-carat diamond compared to a 1-carat diamond?

The edge length increases from approximately 5.5 to approximately 6.3 mm—an increase of about fifteen percent. Because the area increases proportionally with the edge length, the apparent increase in size is more noticeable than the raw millimeter figure would suggest.

Which faceted image should I choose?

Coarse facets produce large, soft flashes of light, while crushed ice sparkles in fine details and better conceals inclusions. Both are correctly cut and are not listed as separate characteristics in the certificate. Therefore, watch the video of the specific stone.

Lab-grown diamond or natural diamond?

Lab-grown diamonds and natural diamonds are both composed of pure carbon and share the same crystal structure, hardness, and refractive index. The difference lies in their formation: one forms over millions of years in the Earth’s crust, while the other is created in a matter of weeks in a laboratory. Visually, they are indistinguishable without specialized laboratory equipment. Lab-grown diamonds are significantly less expensive than comparable natural diamonds, which is why you can often get more carats or a higher clarity grade for the same budget. Both types are certified by IGI or GIA; you can look up the report number directly with the lab.