How much is a 1.5 carat diamond?

The cost of 1.5 carat diamonds varies depending on cut, clarity, colour and certification. A natural GIA 1.5 carat diamond will typically command a higher price than lower-graded options or lab-grown alternatives.

How much is a 1.5 carat diamond ring?

The price of a 1.5 carat diamond ring depends on the diamond quality and ring design. Metal choice, setting style and additional stones all influence final pricing.

How big is a 1.5 carat diamond?

A round 1.5 carat diamond generally measures around 7.3-7.5mm in diameter, offering excellent balance between visual impact and everyday wearability.

Is a 1.5 carat diamond a good size?

Yes. A 1.5 carat diamond ring is considered an ideal size for many buyers, giving strong sparkle and presence without feeling oversized.

Are 1.5 carat diamonds GIA graded?

Yes. All natural loose diamonds at GS Diamonds come with GIA certification, ensuring transparency and trusted grading for quality, sourcing and value.

Do you offer free shipping within Australia and New Zealand?

Yes. We provide complimentary insured shipping across Australia and New Zealand on eligible jewellery purchases.

What is your return policy?

We offer a 30-day return period on eligible items to give customers confidence when purchasing a 1.5 carat diamond for sale online or in-store.

What payment methods are available?

We accept secure payment options including major cards and bank transfer, allowing flexible purchase options across Australia and New Zealand.

1.5 Carat (1.5ct) Diamonds

Discover premium 1.5 carat (3/2 ct) diamonds at GS Diamonds, including GIA-certified natural loose stones in a range of cuts, ready to become your perfect ring or custom jewellery piece. Compare prices, explore 1.5 carat diamonds for sale online or in-store, and shop across Australia with confidence, knowing every diamond is carefully selected for exceptional quality and brilliance.

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Cut

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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 6,506 products

SHAPE	SHAPE	PRICE	CARAT	COLOR	CLARITY	CUT	POLISH	SYMMETRY	FLUORESCENCE	TABLE	DEPTH	RATIO
Cushion SKU 10WE-260081-50	A$2,538	1.50	L	SI1	Excellent	Excellent	Excellent	None	63	69.6	6.76 - 6.03 x 4.2	GIA
Pear SKU 10WE-999142-103	A$2,764	1.50	M	SI2	Excellent	Excellent	Excellent	Faint	62	62.9	9.85 - 6.3 x 3.96	GIA
Cushion SKU AN1E-100765818464	A$2,792	1.50	L	VS1	Excellent	Excellent	Excellent	Strong	61	69.5	6.45 - 6.17 x 4.29	GIA
Cushion SKU AN1E-100766067905	A$2,915	1.50	L	SI1	Excellent	Excellent	Excellent	None	63	71.1	6.31 - 6.07 x 4.31	GIA
Cushion SKU AN1E-100767809968	A$2,944	1.50	L	SI1	Excellent	Excellent	Excellent	Faint	59	69	6.37 - 6.15 x 4.24	GIA
Cushion SKU AN1E-100761084562	A$2,997	1.50	L	SI2	Excellent	Excellent	Excellent	None	63	67.6	6.7 - 6.21 x 4.2	GIA
Cushion SKU AN1E-100766738965	A$3,016	1.50	K	SI2	Excellent	Excellent	Excellent	Faint	60	70.9	6.36 - 6.08 x 4.31	GIA
Radiant SKU 10WE-260443-58	A$3,059	1.50	L	SI2	Very good	Excellent	Very good	None	68	68	7.82 - 5.71 x 3.88	GIA
Cushion SKU AN1E-100767871416	A$3,156	1.50	M	VS2	Very good	Very good	Very good	Medium	62	71.6	6.54 - 6.09 x 4.36	GIA
Pear SKU 10WE-261036-14	A$3,177	1.50	L	VS1	Excellent	Excellent	Excellent	Very strong	64	58.1	9.97 - 6.42 x 3.73	GIA
Pear SKU AN1E-100766942788	A$3,198	1.50	M	SI2	Very good	Excellent	Very good	Faint	56	65.7	9.88 - 6.13 x 4.03	GIA
Cushion SKU AN1E-100766869429	A$3,283	1.50	K	SI1	Very good	Very good	Very good	Medium	59	69.5	6.34 - 6.18 x 4.3	GIA
Cushion SKU AN1E-100766652663	A$3,312	1.50	L	VS2	Very good	Excellent	Very good	Faint	57	69.4	6.29 - 6.18 x 4.29	GIA
Round SKU 10WE-260574-49	A$3,355	1.50	L	SI2	Very good	Very good	Very good	None	56	65.1	7.06 - 7.11 x 4.61	GIA
Cushion SKU S2A9-1555046854	A$3,368	1.50	K	SI1	Excellent	Excellent	Excellent	Faint	60	69.8	6.36 - 6.29 x 4.39	GIA
Pear SKU AN1E-100767859486	A$3,378	1.50	L	SI2	Very good	Very good	Very good	Medium	62	66.5	9.01 - 6.21 x 4.13	GIA
Round SKU AN1E-100767757089	A$3,384	1.50	M	SI2	Very good	Very good	Very good	None	58	64.4	7.15 - 7.07 x 4.58	GIA
Round SKU 10WE-260457-35	A$3,390	1.50	L	SI1	Good	Excellent	Very good	Medium	58	66.7	6.94 - 7 x 4.65	GIA
Cushion SKU AN1E-100767806373	A$3,391	1.50	I	SI2	Very good	Very good	Very good	None	58	71.3	6.27 - 6.07 x 4.32	GIA
Cushion SKU AN1E-100766965322	A$3,434	1.50	L	VS2	Excellent	Excellent	Excellent	None	64	69.5	6.5 - 6.05 x 4.2	GIA
Cushion SKU AN1E-100766614363	A$3,444	1.50	J	SI2	Good	Very good	Good	Faint	66	70.9	6.42 - 6.09 x 4.32	GIA
Princess SKU AN1E-100767901906	A$3,487	1.50	L	SI2	Very good	Excellent	Very good	None	69	74.7	6.04 - 6.03 x 4.51	GIA
Cushion SKU AN1E-100767916872	A$3,488	1.50	K	VS2	Very good	Very good	Very good	None	62	70.9	6.31 - 6.03 x 4.27	GIA
Princess SKU AN1E-100768004332	A$3,553	1.50	M	VS2	Very good	Very good	Very good	None	73	77.8	5.98 - 5.94 x 4.62	GIA
Round SKU AN1E-100767760504	A$3,560	1.50	M	SI2	Excellent	Very good	Very good	Medium	57	63.5	7.28 - 7.19 x 4.59	GIA
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Cushion SKU AN1E-100768337360	A$3,561	1.50	J	SI2	Very good	Excellent	Very good	None	66	67.6	6.58 - 6.32 x 4.27	GIA
Cushion SKU AN1E-100765729546	A$3,610	1.50	I	SI1	Excellent	Excellent	Excellent	Medium	60	69.5	6.74 - 6.03 x 4.19	GIA
Asscher SKU AN1E-100761154712	A$3,620	1.50	K	VS1	Very good	Excellent	Very good	Strong	66	72.3	6.1 - 5.93 x 4.29	GIA
Round SKU 10WE-262201-16	A$3,646	1.50	L	SI2	Very good	Excellent	Very good	None	58	64.4	7.1 - 7.18 x 4.6	GIA
Princess SKU AN1E-100766562869	A$3,678	1.50	K	SI2	Very good	Excellent	Very good	None	71	77.4	6.15 - 5.97 x 4.62	GIA
Oval SKU AN1E-100767763483	A$3,684	1.50	M	VS2	Good	Excellent	Good	Faint	58	66.4	8.27 - 6.38 x 4.24	GIA
Oval SKU AN1E-100768109619	A$3,687	1.50	M	SI2	Very good	Excellent	Very good	None	61	65	8.73 - 6.35 x 4.13	GIA
Cushion SKU AN1E-100768053642	A$3,717	1.50	J	SI2	Excellent	Excellent	Excellent	Faint	64	69.4	6.27 - 6.21 x 4.31	GIA
Cushion SKU AN1E-100765946599	A$3,732	1.50	G	SI2	Excellent	Excellent	Excellent	Strong	61	67.8	6.65 - 6.25 x 4.24	GIA
Cushion SKU AN1E-100767715885	A$3,737	1.50	K	SI1	Excellent	Excellent	Excellent	Medium	60	68	6.68 - 6.11 x 4.15	GIA
Cushion SKU AN1E-100767701519	A$3,745	1.50	K	VS2	Excellent	Excellent	Excellent	None	60	71.1	6.51 - 5.98 x 4.25	GIA
Oval SKU AN1E-100767939106	A$3,754	1.50	L	SI2	Very good	Excellent	Very good	Faint	59	65.1	9.5 - 6.18 x 4.03	GIA
Princess SKU AN1E-100766530758	A$3,778	1.50	K	SI2	Very good	Excellent	Very good	None	72	74.8	6.15 - 6.07 x 4.54	GIA
Pear SKU AN1E-100751829422	A$3,787	1.50	L	SI2	Very good	Very good	Very good	Medium	62	62.5	10.49 - 6.19 x 3.87	GIA
Oval SKU AN1E-100766970280	A$3,789	1.50	K	SI2	Excellent	Excellent	Excellent	Strong	59	64.7	8.59 - 6.49 x 4.2	GIA
Princess SKU AN1E-100765874441	A$3,807	1.50	K	SI1	Good	Excellent	Good	None	70	77.7	5.99 - 5.98 x 4.65	GIA
Cushion SKU AN1E-100768019943	A$3,819	1.50	K	VS2	Excellent	Excellent	Excellent	None	60	71	6.15 - 6.13 x 4.36	GIA
Cushion SKU 10WE-262601-736	A$3,823	1.50	I	SI2	Excellent	Excellent	Excellent	None	61	71.5	7.26 - 5.71 x 4.08	GIA
Cushion SKU AN1E-100767978223	A$3,835	1.50	J	SI2	Excellent	Excellent	Excellent	Faint	63	67.9	6.31 - 6.26 x 4.25	GIA
Pear SKU AN1E-100767541369	A$3,841	1.50	L	SI2	Excellent	Excellent	Excellent	Medium	57	62.8	9.64 - 6.38 x 4	GIA
Princess SKU AN1E-100767511553	A$3,844	1.50	K	SI2	Very good	Excellent	Very good	Faint	71	77.3	6.1 - 5.91 x 4.56	GIA
Princess SKU AN1E-100766079837	A$3,844	1.50	K	SI2	Excellent	Excellent	Excellent	Faint	69	72.6	6.19 - 6.14 x 4.46	GIA
Heart SKU AN1E-100768144046	A$3,845	1.50	M	VS2	Excellent	Excellent	Excellent	Strong	58	59.5	7.15 - 7.83 x 4.66	GIA
Cushion SKU AN1E-100766873262	A$3,857	1.50	J	VS2	Very good	Excellent	Very good	None	66	71	6.31 - 5.99 x 4.25	GIA
Cushion SKU AN1E-100767829778	A$3,877	1.50	K	SI1	Very good	Excellent	Very good	None	57	68	6.77 - 6.15 x 4.18	GIA
Round SKU 10WE-263064-19	A$3,884	1.50	M	SI2	Very good	Excellent	Excellent	None	57	64.8	7.08 - 7.13 x 4.6	GIA
Cushion SKU AN1E-100767525976	A$3,890	1.50	K	VS1	Very good	Excellent	Very good	None	62	70.8	6.56 - 5.99 x 4.24	GIA