3-Carat Cushion-Cut Diamond – Price & Size

3-carat cushion-cut diamonds

At 3 carats, a cushion-cut diamond measures approximately 8.0 × 8.0 mm and clearly fills the width of a finger. At this size, it’s worth choosing F to G for color and VS2 or better for clarity, because the surface reveals every detail. Lab-grown diamonds are significantly less expensive than comparable natural diamonds.

Stone	Form			Purity		Pol.	Sym.	Fluorine.	Laboratory	Dimensions	L/W	Table	Depth	Delivery Time
	Pillow	3,05	E	VVS2	–	EX	EX	None	IGI	10.20 × 7.54 × 5.15	1,35	58 %	68,3 %	7–9 wt.	1.850 €
	Pillow	3,01	E	VS1	–	EX	EX	None	IGI	10.18 × 7.60 × 5.02	1,34	61 %	66,1 %	7–9 wt.	1.660 €
360°	Pillow	3,05	E	VVS2	–	EX	EX	None	IGI	10.24 × 7.64 × 5.06	1,34	60 %	66,2 %	7–9 wt.	1.850 €
	Pillow	3,02	E	VS1	–	EX	EX	None	IGI	8.06 × 8.05 × 6.00	1,00	64 %	74,5 %	7–9 wt.	1.750 €
	Pillow	3,04	E	VVS2	–	EX	VG	None	IGI	8.22 × 8.18 × 6.08	1,00	62 %	74,3 %	7–9 wt.	2.350 €
	Pillow	3,06	E	VVS2	–	EX	EX	None	IGI	10.32 × 7.78 × 4.85	1,33	59 %	62,3 %	7–9 wt.	1.850 €
	Pillow	3,02	E	VS1	–	EX	EX	None	IGI	10.45 × 7.74 × 4.83	1,35	63 %	62,4 %	7–9 wt.	1.660 €
	Pillow	3,01	F	VS1	–	EX	EX	None	IGI	8.24 × 8.16 × 6.04	1,01	60 %	74,0 %	7–9 wt.	1.950 €
360°	Pillow	3,28	D	VVS1	–	EX	EX	None	IGI	10.19 × 7.00 × 4.69	1,46	63 %	67,0 %	4–6 wt.	2.210 €
360°	Pillow	3,20	D	VVS1	–	EX	EX	None	IGI	9.99 × 7.01 × 4.68	1,43	64 %	66,8 %	4–6 wt.	2.150 €
360°	Pillow	3,04	D	VVS1	–	EX	EX	None	IGI	8.75 × 8.67 × 5.44	1,01	58 %	62,7 %	4–6 wt.	2.050 €
360°	Pillow	3,25	E	VVS1	–	EX	EX	None	IGI	10.28 × 6.84 × 4.60	1,50	64 %	67,3 %	4–6 wt.	1.940 €
360°	Pillow	3,21	D	VVS1	–	EX	EX	None	IGI	10.31 × 6.97 × 4.53	1,48	62 %	65,0 %	4–6 wt.	2.160 €
360°	Pillow	3,02	D	VVS1	–	EX	EX	None	IGI	8.87 × 8.49 × 5.36	1,04	53 %	63,1 %	4–6 wt.	2.040 €
360°	Pillow	3,25	F	VVS1	–	EX	EX	None	IGI	10.21 × 7.00 × 4.61	1,46	64 %	65,9 %	4–6 wt.	1.890 €
360°	Pillow	3,05	D	VVS1	–	EX	EX	None	IGI	9.56 × 6.88 × 4.57	1,39	61 %	66,4 %	4–6 wt.	2.060 €
360°	Pillow	3,29	E	VVS1	–	EX	EX	None	IGI	9.99 × 7.00 × 4.75	1,43	65 %	67,9 %	4–6 wt.	1.960 €
360°	Pillow	3,13	E	VVS1	–	EX	EX	None	IGI	8.65 × 8.61 × 5.68	1,00	52 %	66,0 %	4–6 wt.	1.870 €
360°	Pillow	3,12	E	VVS1	–	EX	EX	None	IGI	10.15 × 6.91 × 4.62	1,47	63 %	66,9 %	4–6 wt.	1.860 €
360°	Pillow	3,04	D	VVS1	–	EX	EX	None	IGI	9.90 × 6.72 × 4.56	1,47	69 %	67,9 %	4–6 wt.	2.050 €
360°	Pillow	3,27	E	VVS1	–	EX	EX	None	IGI	10.24 × 7.10 × 4.70	1,44	65 %	66,2 %	4–6 wt.	1.950 €
360°	Pillow	3,70	D	VVS1	–	EX	EX	None	IGI	10.47 × 7.44 × 4.92	1,41	67 %	66,1 %	4–6 wt.	2.900 €
360°	Pillow	3,72	E	VVS1	–	EX	EX	None	IGI	10.58 × 7.26 × 4.91	1,46	65 %	67,6 %	4–6 wt.	2.480 €
360°	Pillow	3,78	F	VVS1	–	EX	EX	None	IGI	10.48 × 7.39 × 4.96	1,42	66 %	67,1 %	4–6 wt.	2.440 €

3.05 ct · Cushion

Colour E · VVS2

10.2 × 7.5 mm

1,850 €IGI

3.01 ct · Cushion

Colour E · VS1

10.2 × 7.6 mm

1,660 €IGI

360°

3.05 ct · Cushion

Colour E · VVS2

10.2 × 7.6 mm

1,850 €IGI

3.02 ct · Cushion

Colour E · VS1

8.1 × 8.1 mm

1,750 €IGI

3.04 ct · Cushion

Colour E · VVS2

8.2 × 8.2 mm

2,350 €IGI

3.06 ct · Cushion

Colour E · VVS2

10.3 × 7.8 mm

1,850 €IGI

3.02 ct · Cushion

Colour E · VS1

10.5 × 7.7 mm

1,660 €IGI

3.01 ct · Cushion

Colour F · VS1

8.2 × 8.2 mm

€1,950IGI

360°

3.28 ct · Cushion

Colour D · VVS1

10.2 × 7.0 mm

2,210 €IGI

360°

3.20 ct · Cushion

Colour D · VVS1

10.0 × 7.0 mm

2,150 €IGI

360°

3.04 ct · Cushion

Colour D · VVS1

8.8 × 8.7 mm

2,050 €IGI

360°

3.25 ct · Cushion

Colour E · VVS1

10.3 × 6.8 mm

1,940 €IGI

360°

3.21 ct · Cushion

Colour D · VVS1

10.3 × 7.0 mm

2,160 €IGI

360°

3.02 ct · Cushion

Colour D · VVS1

8.9 × 8.5 mm

2,040 €IGI

360°

3.25 ct · Cushion

Colour F · VVS1

10.2 × 7.0 mm

1,890 €IGI

360°

3.05 ct · Cushion

Colour D · VVS1

9.6 × 6.9 mm

2,060 €IGI

360°

3.29 ct · Cushion

Colour E · VVS1

10.0 × 7.0 mm

1,960 €IGI

360°

3.13 ct · Cushion

Colour E · VVS1

8.7 × 8.6 mm

1,870 €IGI

360°

3.12 ct · Cushion

Colour E · VVS1

10.2 × 6.9 mm

1,860 €IGI

360°

3.04 ct · Cushion

Colour D · VVS1

9.9 × 6.7 mm

2,050 €IGI

360°

3.27 ct · Cushion

Colour E · VVS1

10.2 × 7.1 mm

€1,950IGI

360°

3.70 ct · Cushion

Colour D · VVS1

10.5 × 7.4 mm

2,900 €IGI

360°

3.72 ct · Cushion

Colour E · VVS1

10.6 × 7.3 mm

2,480 €IGI

360°

3.78 ct · Cushion

Colour F · VVS1

10.5 × 7.4 mm

2,440 €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 big is a 3-carat cushion?

With an edge length of approximately 8.0 mm and a diagonal of about 11 millimeters, it becomes the defining element of the ring. Compared to a round stone of the same weight, it appears more compact, yet its soft corners give it a less austere look.

What should I look for in a 3-carat cushion-cut diamond?

Focus on depth and the faceting pattern. A very deeply cut cushion cut holds its weight without increasing its outline. Also, consider whether you prefer coarse facets or a "crushed ice" cut, as with this size, that will determine the overall impression.

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.