How much does a 5.00ct+ natural radiant diamond cost?

As of October 2026, 5.00ct+ natural radiant diamonds range from $3,449 AUD/ct to $149,151 AUD/ct, with an average of $21,739 AUD/ct.

What is the price range for 5.00ct+ natural radiant diamonds?

As of October 2026, the lowest listed price is $3,449 AUD per carat and the highest is $149,151 AUD per carat. The spread reflects differences in colour, clarity, cut and retailer pricing.

How many 5.00ct+ natural radiant diamonds are available?

There are 2,694 active natural radiant listings between 5.00ct+ across 100+ retailers in the Carat Hunter index, refreshed daily.

How much can I save by comparing retailers for a 5.00ct+ natural radiant diamond?

Approximately 39% of these diamonds are available at multiple retailers, with an average price spread of 95% between the cheapest and most expensive listing of the same stone.

Natural Radiant Diamonds, 5.00ct+

Quick answer

As of October 2026, there are 2,694 listings of natural radiant diamonds between 5.00ct+ from at least 29 retailers. A typical stone in this range costs about $130,436 AUD in total, or $21,739 AUD per carat, and most listings sit between $3,449 AUD and $149,151 AUD per carat. About 39% of these stones are listed by more than one retailer, and the same stone is priced 95% apart on average between its cheapest and most expensive seller. The same shape in lab grown form runs about $1,001 AUD per carat, roughly 95% less.

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

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Radiant natural stones in the index: 3,091 USD per carat, +13.2% month on month. See the full index release

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

Last updated: October 2026

Browse 2,694 diamonds in Explorer

Price Distribution

LowHigh

Colour	IF	VVS1	VVS2	VS1	VS2	SI1	SI2	I
N+	$23K	$18K	$19K	$16K	$17K	$13K	$9,474	$3,039

Price by Colour & Clarity

Average price per carat for 5.00ct+ natural radiant diamonds by colour and clarity grade.

Colour	Clarity	Listings	Avg Price/ct	Spread
N+	I	37	$4,322 AUD	439%
N+	IF	135	$32,109 AUD	61%
N+	SI1	149	$18,616 AUD	49%
N+	SI2	180	$13,471 AUD	97%
N+	VS1	671	$23,366 AUD	75%
N+	VS2	844	$24,736 AUD	66%
N+	VVS1	333	$26,139 AUD	57%
N+	VVS2	327	$26,726 AUD	94%
N+	other	18	$13,180 AUD	76%

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