How much does a 1.50 to 1.99ct J IF natural radiant diamond cost?

As of October 2026, 1.50 to 1.99ct J IF natural radiant diamonds typically cost $6,032 AUD to $17,317 AUD, with a median price of $10,667 AUD. There are currently 4 diamonds matching this specification available across retailers.

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

About 39% of these diamonds are available at multiple retailers, with an average price spread of 58%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct J IF Natural Radiant

Quick answer

As of October 2026, there are 4 natural radiant diamonds with J colour and IF clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $6,032 AUD to $17,317 AUD, with a median of $10,667 AUD. At least 29 retailers stock this exact specification, and 39% of the stones appear at more than one of them, with an average price spread of 58%. Half of all listings fall between $3,940 AUD and $6,693 AUD per carat. Over the last 30 days the median price moved -4.2% and the number of listings moved +6.3%.

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

$4,173 AUD

Highest Price

$21,334 AUD

Average Price

$11,451 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

39.3%

Price Spread

58.5%

30-Day Price Trend

-4.2%

30-Day Supply Change

+6.3%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$3,308/ct

10th Percentile

$2,299

Median

$3,308

90th Percentile

$5,486

Score Distribution

15 diamonds scored across 4 quality tiers

Excellent

2 (13.3%)

Very Good

4 (26.7%)

Good

1 (6.7%)

Average

8 (53.3%)

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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