How much does a 1.00 to 1.49ct J IF natural round diamond cost?

As of October 2026, 1.00 to 1.49ct J IF natural round diamonds typically cost $3,408 AUD to $9,511 AUD, with a median price of $5,124 AUD. There are currently 412 diamonds matching this specification available across retailers.

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

About 40% of these diamonds are available at multiple retailers, with an average price spread of 40%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J IF Natural Round

Quick answer

As of October 2026, there are 412 natural round diamonds with J colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,408 AUD to $9,511 AUD, with a median of $5,124 AUD. At least 56 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 40%. Half of all listings fall between $3,677 AUD and $5,428 AUD per carat. Over the last 30 days the median price moved -0.9% and the number of listings moved +6.4%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

412

Lowest Price

$1,664 AUD

Highest Price

$20,422 AUD

Average Price

$5,907 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

39.9%

Price Spread

39.6%

30-Day Price Trend

-0.9%

30-Day Supply Change

+6.4%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$3,105/ct

10th Percentile

$2,185

Median

$3,105

90th Percentile

$5,229

Score Distribution

1.1K diamonds scored across 4 quality tiers

Excellent

287 (25.1%)

Very Good

238 (20.8%)

Good

209 (18.3%)

Average

409 (35.8%)

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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