How much does a 3.00 to 4.99ct lab grown radiant diamond cost?

As of September 2026, 3.00 to 4.99ct lab grown radiant diamonds range from $295 NZD/ct to $28,672 NZD/ct, with an average of $2,389 NZD/ct.

What is the price range for 3.00 to 4.99ct lab grown radiant diamonds?

As of September 2026, the lowest listed price is $295 NZD per carat and the highest is $28,672 NZD per carat. The spread reflects differences in colour, clarity, cut and retailer pricing.

How many 3.00 to 4.99ct lab grown radiant diamonds are available?

There are 377,078 active lab grown radiant listings between 3.00 to 4.99ct across 100+ retailers in the Carat Hunter index, refreshed daily.

How much can I save by comparing retailers for a 3.00 to 4.99ct lab grown radiant diamond?

Approximately 17% of these diamonds are available at multiple retailers, with an average price spread of 111% between the cheapest and most expensive listing of the same stone.

Lab Grown Radiant Diamonds, 3.00 to 4.99ct

Quick answer

As of September 2026, there are 377,078 lab grown radiant diamonds between 3.00 to 4.99ct listed by at least 53 retailers. A typical stone in this range costs about $9,078 NZD in total, or $2,389 NZD per carat, and most listings sit between $295 NZD and $28,672 NZD per carat. About 17% of these stones are listed by more than one retailer, and the same stone is priced 111% apart on average between its cheapest and most expensive seller. The best value grade combination with real depth of stock is F to G VVS2 at $758 NZD per carat across 34,181 listings. The same shape in natural form runs about $20,355 NZD per carat, roughly 8.5 times more.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Radiant lab grown stones in the index: 473 USD per carat, -12.5% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Browse 377,078 diamonds in Explorer

Price Distribution

LowHigh

Colour	FL	IF	VVS1	VVS2	VS1	VS2	SI1	SI2	I
D-E	$2,208	$1,557	$1,061	$500	$473	$487	$368	$330	-
F-G	$2,197	$1,159	$667	$441	$452	$443	$377	$959	-
H-I	-	$1,011	$1,467	$436	$438	$897	$751	$13K	-
J-K	-	-	-	-	$982	$1,296	$1,422	$3,449	$6,201
N+	-	$2,425	$614	$525	$493	$461	$394	$366	-

Price by Colour & Clarity

Average price per carat for 3.00 to 4.99ct lab grown radiant diamonds by colour and clarity grade.

Colour	Clarity	Listings	Avg Price/ct	Spread
D-E	FL	13,577	$3,794 NZD	136%
D-E	IF	21,756	$2,674 NZD	123%
D-E	SI1	686	$632 NZD	240%
D-E	SI2	44	$568 NZD	197%
D-E	VS1	71,694	$813 NZD	101%
D-E	VS2	10,751	$836 NZD	138%
D-E	VVS1	36,656	$1,823 NZD	129%
D-E	VVS2	125,306	$860 NZD	110%
F-G	FL	73	$3,774 NZD	105%
F-G	IF	905	$1,991 NZD	111%
F-G	SI1	691	$647 NZD	166%
F-G	SI2	29	$1,647 NZD	149%
F-G	VS1	25,568	$776 NZD	129%
F-G	VS2	5,476	$762 NZD	152%
F-G	VVS1	3,000	$1,146 NZD	163%
F-G	VVS2	34,181	$758 NZD	115%
F-G	other	20	$822 NZD	130%
H-I	IF	25	$1,736 NZD	98%
H-I	SI1	169	$1,290 NZD	120%
H-I	SI2	21	$22,589 NZD	63%
H-I	VS1	2,334	$753 NZD	167%
H-I	VS2	703	$1,540 NZD	96%
H-I	VVS1	155	$2,520 NZD	43%
H-I	VVS2	952	$749 NZD	188%
J-K	I	45	$10,653 NZD	4%
J-K	SI1	26	$2,442 NZD	58%
J-K	SI2	20	$5,924 NZD	173%
J-K	VS1	45	$1,687 NZD	128%
J-K	VS2	72	$2,227 NZD	43%
N+	IF	79	$4,166 NZD	2%
N+	SI1	606	$677 NZD	84%
N+	SI2	68	$630 NZD	84%
N+	VS1	9,763	$848 NZD	85%
N+	VS2	4,351	$793 NZD	85%
N+	VVS1	245	$1,055 NZD	83%
N+	VVS2	5,388	$902 NZD	86%
N+	other	1,598	$3,511 NZD	10%

Explore by Specification

D FL D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 D SI2 E FL E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 E SI2 F FL F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 F SI2 G FL G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 G SI2 H FL H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 H SI2 I FL I IF I VVS1 I VVS2 I VS1 I VS2 I SI1 I SI2 J FL J IF J VVS1 J VVS2 J VS1 J VS2 J SI1 J SI2