How much is a 4 carat diamond worth?

The 4 carat diamond cost varies depending on cut, colour, clarity and certification. Higher-quality stones with excellent cut and clarity command significantly higher prices than lower-graded diamonds.

How much is a 4 carat diamond ring?

The 4 carat diamond ring price depends on the diamond quality and setting. Factors such as metal type, design complexity and additional stones influence the final cost.

How big is a 4 carat diamond?

A round 4ct diamond typically measures around 10mm in diameter, offering a strong visual presence and noticeable brilliance when set in a ring.

What payment methods are available?

We accept a range of secure payment options, including major credit cards, bank transfer and flexible payment solutions both in-store and online.

What is your return policy?

We offer a 30-day return period on eligible, fully paid items priced up to $15,000 including GST, allowing you to request a refund or exchange within this timeframe for added peace of mind.

4 Carat (4ct) Diamonds

Shop premium 4 carat diamonds at GS Diamonds, including loose 4 carat natural and lab-grown diamonds with GIA or IGI certification. Whether you're comparing 4 carat diamond prices, searching for a 4 carat diamond ring, or exploring diamonds for a custom design, discover exceptional stones online or visit our boutiques across Australia.

Filters

Shape

Cut

Excellent

Very Good

Good

Fair

Fair Cut

Some light loss. Reflects most light but not as brilliantly as higher grade cuts.

Colour

Faint Yellow (M)

Noticeable colour. Not typically recommended for colourless diamond jewellery.

Clarity

VVS1

VVS2

VS1

VS2

SI1

SI2

Slightly Included 2

Inclusions are visible under 10x magnification and may be visible with an unaided eye. More inclusions than SI1.

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We found 44 products

Cushion Diamond

SKU AN1E-100761358314

Cut Good
Carat 4.00
Clarity VS2
Color M
Polish Excellent
Symmetry Good
Fluorescence Strong
Table 58
Depth 69.4
Measurement 8.8 - 8.43 x 5.85
Certificate GIA

A$18,716

A$19,701

Round Diamond

SKU 10WE-262379-33

Cut Very good
Carat 4.00
Clarity SI1
Color K
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 55
Depth 64.7
Measurement 9.82 - 9.89 x 6.37
Certificate GIA

A$41,870

A$44,074

Oval Diamond

SKU 10WE-262424-85

Cut Excellent
Carat 4.00
Clarity VS2
Color J
Polish Excellent
Symmetry Excellent
Fluorescence Strong
Table 62
Depth 64.7
Measurement 12.2 - 8.91 x 5.77
Certificate GIA

A$45,788

A$48,198

Round Diamond

SKU 10WE-260556-76

Cut Excellent
Carat 4.00
Clarity SI1
Color J
Polish Excellent
Symmetry Very good
Fluorescence Medium
Table 56
Depth 63.8
Measurement 9.92 - 10.06 x 6.37
Certificate GIA

A$46,331

A$48,769

Round Diamond

SKU S2A9-6502671008

Cut Very good
Carat 4.00
Clarity VS2
Color K
Polish Excellent
Symmetry Very good
Fluorescence Medium
Table 63
Depth 63.4
Measurement 9.88 - 10.01 x 6.31
Certificate GIA

A$51,748

A$54,472

Cushion Diamond

SKU AN1E-100757304094

Cut Very good
Carat 4.00
Clarity SI2
Color H
Polish Excellent
Symmetry Very good
Fluorescence None
Table 63
Depth 68.2
Measurement 8.85 - 8.56 x 5.84
Certificate GIA

A$56,950

A$59,947

Round Diamond

SKU S2A9-1505841434

Cut Excellent
Carat 4.00
Clarity SI1
Color K
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 57
Depth 63.6
Measurement 9.99 - 10.05 x 6.38
Certificate GIA

A$62,624

A$65,920

Oval Diamond

SKU 10WE-260571-36

Cut Very good
Carat 4.00
Clarity SI1
Color I
Polish Excellent
Symmetry Very good
Fluorescence None
Table 61
Depth 63.8
Measurement 12.03 - 8.61 x 5.5
Certificate GIA

A$75,500

A$79,474

Cushion Diamond

SKU 10WE-262503-28

Cut Excellent
Carat 4.00
Clarity VS1
Color H
Polish Excellent
Symmetry Excellent
Fluorescence Faint
Table 60
Depth 69.2
Measurement 9.91 - 8.25 x 5.71
Certificate GIA

A$76,439

A$80,462

Princess Diamond

SKU EDLI-LD25104458

Cut Very good
Carat 4.00
Clarity VS1
Color I
Polish Excellent
Symmetry Very good
Fluorescence None
Table 73
Depth 73.5
Measurement 8.68 - 8.67 x 6.37
Certificate GIA

A$78,222

A$82,339

Round Diamond

SKU EDLI-LD29552920

Cut Excellent
Carat 4.00
Clarity SI1
Color J
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 58
Depth 62.9
Measurement 9.98 - 10.06 x 6.31
Certificate GIA

A$78,859

A$83,009

Oval Diamond

SKU S2A9-2225234973

Cut Excellent
Carat 4.00
Clarity SI1
Color I
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 59
Depth 64.4
Measurement 12.42 - 8.37 x 5.39
Certificate GIA

A$98,880

A$104,084

Round Diamond

SKU 10WE-265110-10

Cut Excellent
Carat 4.00
Clarity SI2
Color E
Polish Excellent
Symmetry Excellent
Fluorescence Medium
Table 59
Depth 62.1
Measurement 10.11 - 10.16 x 6.3
Certificate GIA

A$99,094

A$104,309

Round Diamond

SKU 10WE-260610-12

Cut Very good
Carat 4.00
Clarity VS1
Color D
Polish Excellent
Symmetry Excellent
Fluorescence Very strong
Table 57
Depth 65
Measurement 9.8 - 9.87 x 6.39
Certificate GIA

A$99,653

A$104,898

Emerald Diamond

SKU EDLI-LD29163510

Cut Excellent
Carat 4.00
Clarity VS2
Color G
Polish Excellent
Symmetry Excellent
Fluorescence Faint
Table 65
Depth 71.4
Measurement 10.12 - 7.43 x 5.3
Certificate GIA

A$100,419

A$105,704

Emerald Diamond

SKU S2A9-1569370789

Cut Very good
Carat 4.00
Clarity SI1
Color F
Polish Excellent
Symmetry Very good
Fluorescence Faint
Table 51
Depth 70.5
Measurement 10.33 - 7.24 x 5.1
Certificate GIA

A$106,443

A$112,045

Emerald Diamond

SKU S2A9-5241025358

Cut Excellent
Carat 4.00
Clarity VS2
Color I
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 71
Depth 61.2
Measurement 11.15 - 7.54 x 4.62
Certificate GIA

A$108,035

A$113,721

Oval Diamond

SKU 10WE-261049-45

Cut Excellent
Carat 4.00
Clarity SI1
Color D
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 61
Depth 64.6
Measurement 11.93 - 8.7 x 5.62
Certificate GIA

A$111,664

A$117,541

Round Diamond

SKU S2A9-5443527702

Cut Excellent
Carat 4.00
Clarity VS1
Color H
Polish Excellent
Symmetry Very good
Fluorescence None
Table 57
Depth 63.4
Measurement 10 - 10.09 x 6.37
Certificate GIA

A$116,489

A$122,620

Oval Diamond

SKU EDLI-LD28938482

Cut Excellent
Carat 4.00
Clarity VS2
Color D
Polish Excellent
Symmetry Excellent
Fluorescence Strong
Table 60
Depth 62.7
Measurement 12.32 - 8.85 x 5.55
Certificate GIA

A$117,130

A$123,295

Oval Diamond

SKU S2A9-1216854228

Cut Excellent
Carat 4.00
Clarity SI1
Color H
Polish Excellent
Symmetry Excellent
Fluorescence Faint
Table 59
Depth 63.8
Measurement 12.09 - 8.81 x 5.62
Certificate GIA

A$117,476

A$123,659

Heart Diamond

SKU AN1E-100765971299

Cut Very good
Carat 4.00
Clarity VS1
Color E
Polish Excellent
Symmetry Very good
Fluorescence Faint
Table 58
Depth 60.1
Measurement 9.37 - 11.17 x 6.71
Certificate GIA

A$118,847

A$125,102

Round Diamond

SKU S2A9-5503841648

Cut Excellent
Carat 4.00
Clarity SI1
Color D
Polish Excellent
Symmetry Very good
Fluorescence Strong
Table 55
Depth 63.4
Measurement 9.97 - 10.09 x 6.36
Certificate GIA

A$121,246

A$127,627

Pear Diamond

SKU S2A9-5553785405

Cut Very good
Carat 4.00
Clarity SI1
Color D
Polish Excellent
Symmetry Very good
Fluorescence None
Table 62
Depth 63.3
Measurement 13.93 - 8.38 x 5.31
Certificate GIA

A$126,136

A$132,775

Round Diamond

SKU S2A9-2486784654

Cut Excellent
Carat 4.00
Clarity VVS1
Color H
Polish Excellent
Symmetry Excellent
Fluorescence Faint
Table 57
Depth 63
Measurement 10 - 10.07 x 6.32
Certificate GIA

A$128,225

A$134,974

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Oval Diamond

SKU EDLI-LD28862195

Cut Excellent
Carat 4.00
Clarity SI1
Color D
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 58
Depth 63
Measurement 12.6 - 8.86 x 5.58
Certificate GIA

A$131,130

A$138,032

Round Diamond

SKU AN1E-100767703198

Cut Excellent
Carat 4.00
Clarity SI1
Color F
Polish Excellent
Symmetry Excellent
Fluorescence Faint
Table 55
Depth 63.4
Measurement 10.11 - 10.05 x 6.39
Certificate GIA

A$135,829

A$142,978

Oval Diamond

SKU S2A9-1553184451

Cut Excellent
Carat 4.00
Clarity VS2
Color D
Polish Excellent
Symmetry Excellent
Fluorescence Strong
Table 59
Depth 62.3
Measurement 12.69 - 8.74 x 5.45
Certificate GIA

A$136,695

A$143,889

Marquise Diamond

SKU AN1E-100760012000

Cut Excellent
Carat 4.00
Clarity VS2
Color E
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 65
Depth 63.9
Measurement 14.85 - 8.41 x 5.37
Certificate GIA

A$146,035

A$153,721

Asscher Diamond

SKU AN1E-100753596260

Cut Good
Carat 4.00
Clarity VVS2
Color D
Polish Very good
Symmetry Good
Fluorescence None
Table 65
Depth 68.5
Measurement 8.77 - 8.65 x 5.92
Certificate GIA

A$147,193

A$154,940

Emerald Diamond

SKU 10WE-262443-113

Cut Excellent
Carat 4.00
Clarity VVS1
Color E
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 71
Depth 67.2
Measurement 10.95 - 7.41 x 4.98
Certificate GIA

A$153,530

A$161,610

Round Diamond

SKU AN1E-100748090773

Cut Very good
Carat 4.00
Clarity VS2
Color E
Polish Excellent
Symmetry Good
Fluorescence None
Table 57
Depth 65.3
Measurement 9.86 - 9.73 x 6.4
Certificate GIA

A$154,278

A$162,398

Emerald Diamond

SKU 10WE-262571-64

Cut Excellent
Carat 4.00
Clarity VVS1
Color D
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 71
Depth 67.8
Measurement 10.76 - 7.71 x 5.22
Certificate GIA

A$158,798

A$167,156

Marquise Diamond

SKU S2A9-1525809237

Cut Very good
Carat 4.00
Clarity VS2
Color F
Polish Excellent
Symmetry Very good
Fluorescence Faint
Table 63
Depth 63.7
Measurement 16.1 - 8.03 x 5.11
Certificate GIA

A$159,054

A$167,425

Oval Diamond

SKU S2A9-6552244965

Cut Very good
Carat 4.00
Clarity IF
Color D
Polish Excellent
Symmetry Very good
Fluorescence Medium
Table 61
Depth 63.7
Measurement 12.81 - 8.86 x 5.64
Certificate GIA

A$171,300

A$180,316

Emerald Diamond

SKU 10WE-262571-60

Cut Excellent
Carat 4.00
Clarity FL
Color D
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 71
Depth 68.2
Measurement 10.71 - 7.69 x 5.25
Certificate GIA

A$196,305

A$206,637

Pear Diamond

SKU 10WE-261056-87

Cut Excellent
Carat 4.00
Clarity IF
Color D
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 61
Depth 63.2
Measurement 13.97 - 8.73 x 5.52
Certificate GIA

A$200,611

A$211,169

Emerald Diamond

SKU AN1E-100767791073

Cut Good
Carat 4.00
Clarity IF
Color D
Polish Excellent
Symmetry Good
Fluorescence None
Table 60
Depth 68.2
Measurement 10.55 - 7.42 x 5.06
Certificate GIA

A$204,790

A$215,568

Round Diamond

SKU EDLI-LD29428157

Cut Excellent
Carat 4.00
Clarity VVS2
Color F
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 60
Depth 59.7
Measurement 10.24 - 10.31 x 6.13
Certificate GIA

A$210,791

A$221,885

Round Diamond

SKU EDLI-LD29428151

Cut Excellent
Carat 4.00
Clarity VVS2
Color F
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 60
Depth 62.3
Measurement 10.08 - 10.14 x 6.29
Certificate GIA

A$210,791

A$221,885

Pear Diamond

SKU S2A9-6551244169

Cut Excellent
Carat 4.00
Clarity IF
Color D
Polish Excellent
Symmetry Excellent
Fluorescence None
Table 62
Depth 57.3
Measurement 14.66 - 8.83 x 5.06
Certificate GIA

A$213,660

A$224,905

Round Diamond

SKU S2A9-1533833233

Cut Very good
Carat 4.00
Clarity VVS1
Color D
Polish Excellent
Symmetry Good
Fluorescence Strong
Table 59
Depth 62.7
Measurement 9.98 - 10.09 x 6.29
Certificate GIA

A$221,680

A$233,347

Round Diamond

SKU 10WE-260250-76

Cut Excellent
Carat 4.00
Clarity VVS1
Color D
Polish Excellent
Symmetry Very good
Fluorescence None
Table 57
Depth 63.4
Measurement 10 - 10.06 x 6.35
Certificate GIA

A$234,513

A$246,856

Pear Diamond

SKU S2A9-7481912567

Cut Very good
Carat 4.00
Clarity IF
Color D
Polish Excellent
Symmetry Very good
Fluorescence None
Table 60
Depth 61.7
Measurement 14.22 - 8.77 x 5.41
Certificate GIA

A$237,309

A$249,799

SHAPE	SHAPE	PRICE	CARAT	COLOR	CLARITY	CUT	POLISH	SYMMETRY	FLUORESCENCE	TABLE	DEPTH	RATIO
Cushion SKU AN1E-100761358314	A$18,716 A$19,701	4.00	M	VS2	Good	Excellent	Good	Strong	58	69.4	8.8 - 8.43 x 5.85	GIA
Round SKU 10WE-262379-33	A$41,870 A$44,074	4.00	K	SI1	Very good	Excellent	Excellent	None	55	64.7	9.82 - 9.89 x 6.37	GIA
Oval SKU 10WE-262424-85	A$45,788 A$48,198	4.00	J	VS2	Excellent	Excellent	Excellent	Strong	62	64.7	12.2 - 8.91 x 5.77	GIA
Round SKU 10WE-260556-76	A$46,331 A$48,769	4.00	J	SI1	Excellent	Excellent	Very good	Medium	56	63.8	9.92 - 10.06 x 6.37	GIA
Round SKU S2A9-6502671008	A$51,748 A$54,472	4.00	K	VS2	Very good	Excellent	Very good	Medium	63	63.4	9.88 - 10.01 x 6.31	GIA
Cushion SKU AN1E-100757304094	A$56,950 A$59,947	4.00	H	SI2	Very good	Excellent	Very good	None	63	68.2	8.85 - 8.56 x 5.84	GIA
Round SKU S2A9-1505841434	A$62,624 A$65,920	4.00	K	SI1	Excellent	Excellent	Excellent	None	57	63.6	9.99 - 10.05 x 6.38	GIA
Oval SKU 10WE-260571-36	A$75,500 A$79,474	4.00	I	SI1	Very good	Excellent	Very good	None	61	63.8	12.03 - 8.61 x 5.5	GIA
Cushion SKU 10WE-262503-28	A$76,439 A$80,462	4.00	H	VS1	Excellent	Excellent	Excellent	Faint	60	69.2	9.91 - 8.25 x 5.71	GIA
Princess SKU EDLI-LD25104458	A$78,222 A$82,339	4.00	I	VS1	Very good	Excellent	Very good	None	73	73.5	8.68 - 8.67 x 6.37	GIA
Round SKU EDLI-LD29552920	A$78,859 A$83,009	4.00	J	SI1	Excellent	Excellent	Excellent	None	58	62.9	9.98 - 10.06 x 6.31	GIA
Oval SKU S2A9-2225234973	A$98,880 A$104,084	4.00	I	SI1	Excellent	Excellent	Excellent	None	59	64.4	12.42 - 8.37 x 5.39	GIA
Round SKU 10WE-265110-10	A$99,094 A$104,309	4.00	E	SI2	Excellent	Excellent	Excellent	Medium	59	62.1	10.11 - 10.16 x 6.3	GIA
Round SKU 10WE-260610-12	A$99,653 A$104,898	4.00	D	VS1	Very good	Excellent	Excellent	Very strong	57	65	9.8 - 9.87 x 6.39	GIA
Emerald SKU EDLI-LD29163510	A$100,419 A$105,704	4.00	G	VS2	Excellent	Excellent	Excellent	Faint	65	71.4	10.12 - 7.43 x 5.3	GIA
Emerald SKU S2A9-1569370789	A$106,443 A$112,045	4.00	F	SI1	Very good	Excellent	Very good	Faint	51	70.5	10.33 - 7.24 x 5.1	GIA
Emerald SKU S2A9-5241025358	A$108,035 A$113,721	4.00	I	VS2	Excellent	Excellent	Excellent	None	71	61.2	11.15 - 7.54 x 4.62	GIA
Oval SKU 10WE-261049-45	A$111,664 A$117,541	4.00	D	SI1	Excellent	Excellent	Excellent	None	61	64.6	11.93 - 8.7 x 5.62	GIA
Round SKU S2A9-5443527702	A$116,489 A$122,620	4.00	H	VS1	Excellent	Excellent	Very good	None	57	63.4	10 - 10.09 x 6.37	GIA
Oval SKU EDLI-LD28938482	A$117,130 A$123,295	4.00	D	VS2	Excellent	Excellent	Excellent	Strong	60	62.7	12.32 - 8.85 x 5.55	GIA
Oval SKU S2A9-1216854228	A$117,476 A$123,659	4.00	H	SI1	Excellent	Excellent	Excellent	Faint	59	63.8	12.09 - 8.81 x 5.62	GIA
Heart SKU AN1E-100765971299	A$118,847 A$125,102	4.00	E	VS1	Very good	Excellent	Very good	Faint	58	60.1	9.37 - 11.17 x 6.71	GIA
Round SKU S2A9-5503841648	A$121,246 A$127,627	4.00	D	SI1	Excellent	Excellent	Very good	Strong	55	63.4	9.97 - 10.09 x 6.36	GIA
Pear SKU S2A9-5553785405	A$126,136 A$132,775	4.00	D	SI1	Very good	Excellent	Very good	None	62	63.3	13.93 - 8.38 x 5.31	GIA
Round SKU S2A9-2486784654	A$128,225 A$134,974	4.00	H	VVS1	Excellent	Excellent	Excellent	Faint	57	63	10 - 10.07 x 6.32	GIA
Need help finding the perfect diamond?
Oval SKU EDLI-LD28862195	A$131,130 A$138,032	4.00	D	SI1	Excellent	Excellent	Excellent	None	58	63	12.6 - 8.86 x 5.58	GIA
Round SKU AN1E-100767703198	A$135,829 A$142,978	4.00	F	SI1	Excellent	Excellent	Excellent	Faint	55	63.4	10.11 - 10.05 x 6.39	GIA
Oval SKU S2A9-1553184451	A$136,695 A$143,889	4.00	D	VS2	Excellent	Excellent	Excellent	Strong	59	62.3	12.69 - 8.74 x 5.45	GIA
Marquise SKU AN1E-100760012000	A$146,035 A$153,721	4.00	E	VS2	Excellent	Excellent	Excellent	None	65	63.9	14.85 - 8.41 x 5.37	GIA
Asscher SKU AN1E-100753596260	A$147,193 A$154,940	4.00	D	VVS2	Good	Very good	Good	None	65	68.5	8.77 - 8.65 x 5.92	GIA
Emerald SKU 10WE-262443-113	A$153,530 A$161,610	4.00	E	VVS1	Excellent	Excellent	Excellent	None	71	67.2	10.95 - 7.41 x 4.98	GIA
Round SKU AN1E-100748090773	A$154,278 A$162,398	4.00	E	VS2	Very good	Excellent	Good	None	57	65.3	9.86 - 9.73 x 6.4	GIA
Emerald SKU 10WE-262571-64	A$158,798 A$167,156	4.00	D	VVS1	Excellent	Excellent	Excellent	None	71	67.8	10.76 - 7.71 x 5.22	GIA
Marquise SKU S2A9-1525809237	A$159,054 A$167,425	4.00	F	VS2	Very good	Excellent	Very good	Faint	63	63.7	16.1 - 8.03 x 5.11	GIA
Oval SKU S2A9-6552244965	A$171,300 A$180,316	4.00	D	IF	Very good	Excellent	Very good	Medium	61	63.7	12.81 - 8.86 x 5.64	GIA
Emerald SKU 10WE-262571-60	A$196,305 A$206,637	4.00	D	FL	Excellent	Excellent	Excellent	None	71	68.2	10.71 - 7.69 x 5.25	GIA
Pear SKU 10WE-261056-87	A$200,611 A$211,169	4.00	D	IF	Excellent	Excellent	Excellent	None	61	63.2	13.97 - 8.73 x 5.52	GIA
Emerald SKU AN1E-100767791073	A$204,790 A$215,568	4.00	D	IF	Good	Excellent	Good	None	60	68.2	10.55 - 7.42 x 5.06	GIA
Round SKU EDLI-LD29428157	A$210,791 A$221,885	4.00	F	VVS2	Excellent	Excellent	Excellent	None	60	59.7	10.24 - 10.31 x 6.13	GIA
Round SKU EDLI-LD29428151	A$210,791 A$221,885	4.00	F	VVS2	Excellent	Excellent	Excellent	None	60	62.3	10.08 - 10.14 x 6.29	GIA
Pear SKU S2A9-6551244169	A$213,660 A$224,905	4.00	D	IF	Excellent	Excellent	Excellent	None	62	57.3	14.66 - 8.83 x 5.06	GIA
Round SKU S2A9-1533833233	A$221,680 A$233,347	4.00	D	VVS1	Very good	Excellent	Good	Strong	59	62.7	9.98 - 10.09 x 6.29	GIA
Round SKU 10WE-260250-76	A$234,513 A$246,856	4.00	D	VVS1	Excellent	Excellent	Very good	None	57	63.4	10 - 10.06 x 6.35	GIA
Pear SKU S2A9-7481912567	A$237,309 A$249,799	4.00	D	IF	Very good	Excellent	Very good	None	60	61.7	14.22 - 8.77 x 5.41	GIA