How much does a 0.50 to 0.74ct I IF natural radiant diamond cost?

As of October 2026, 0.50 to 0.74ct I IF natural radiant diamonds typically cost $725 AUD to $1,785 AUD, with a median price of $1,187 AUD. There are currently 70 diamonds matching this specification available across retailers.

Where can I find the best price on a I IF radiant diamond?

About 32% of these diamonds are available at multiple retailers, with an average price spread of 49%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct I IF Natural Radiant

Quick answer

As of October 2026, there are 70 natural radiant diamonds with I colour and IF clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $725 AUD to $1,785 AUD, with a median of $1,187 AUD. At least 50 retailers stock this exact specification, and 32% of the stones appear at more than one of them, with an average price spread of 49%. Half of all listings fall between $1,869 AUD and $2,971 AUD per carat. Over the last 30 days the median price moved -2.4% and the number of listings moved +0.3%.

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

Available

Lowest Price

$509 AUD

Highest Price

$4,334 AUD

Average Price

$1,234 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

32.4%

Price Spread

48.7%

30-Day Price Trend

-2.4%

30-Day Supply Change

+0.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,592/ct

10th Percentile

$1,098

Median

$1,592

90th Percentile

$2,912

Score Distribution

216 diamonds scored across 4 quality tiers

Excellent

63 (29.2%)

Very Good

60 (27.8%)

Good

61 (28.2%)

Average

32 (14.8%)

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J IFJ colour is visually identical to I to the naked eye

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Related Specifications

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