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 $3,068 SGD to $8,564 SGD, with a median price of $4,625 SGD. There are currently 501 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 501 natural round diamonds with J colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,068 SGD to $8,564 SGD, with a median of $4,625 SGD. At least 57 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 $3,310 SGD and $4,881 SGD per carat. Over the last 30 days the median price moved -1.4% and the number of listings moved +11.1%.

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

501

Lowest Price

$1,498 SGD

Highest Price

$18,389 SGD

Average Price

$5,319 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

39.7%

Price Spread

39.5%

30-Day Price Trend

-1.4%

30-Day Supply Change

+11.1%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$3,102/ct

10th Percentile

$2,181

Median

$3,102

90th Percentile

$5,225

Score Distribution

1.4K diamonds scored across 4 quality tiers

Excellent

372 (27.0%)

Very Good

331 (24.0%)

Good

250 (18.1%)

Average

426 (30.9%)

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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