How much does a 1.00 to 1.49ct J IF lab grown radiant diamond cost?

As of September 2026, 1.00 to 1.49ct J IF lab grown radiant diamonds typically cost $3,861 SGD to $5,499 SGD, with a median price of $4,828 SGD. There are currently 4 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

1.00 to 1.49ct J IF Lab Grown Radiant

Quick answer

As of September 2026, there are 4 lab grown radiant diamonds with J colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,861 SGD to $5,499 SGD, with a median of $4,828 SGD. At least 5 retailers stock this exact specification. Half of all listings fall between $2,184 SGD and $4,448 SGD per carat. The same specification in natural form lists at a median of about $3,809 SGD per carat.

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Radiant lab grown stones in the index: 473 USD per carat, -12.5% month on month. See the full index release

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

Last updated: September 2026

Available

Lowest Price

$3,466 SGD

Highest Price

$5,766 SGD

Average Price

$4,722 SGD

Market Intelligence

Retailers Selling

Price Spread

66.9%

Price Range

Price per carat distribution across retailers

$2,539/ct

10th Percentile

$1,529

Median

$2,539

90th Percentile

$3,606

Score Distribution

4 diamonds scored across 1 quality tiers

Average

4 (100.0%)

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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