How much does a 1.00 to 1.49ct J SI2 lab grown radiant diamond cost?

As of September 2026, 1.00 to 1.49ct J SI2 lab grown radiant diamonds typically cost ₹1,72,056 INR to ₹2,42,472 INR, with a median price of ₹1,82,036 INR. There are currently 79 diamonds matching this specification available across retailers.

Where can I find the best price on a J SI2 radiant diamond?

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

1.00 to 1.49ct J SI2 Lab Grown Radiant

Quick answer

As of September 2026, there are 79 lab grown radiant diamonds with J colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run ₹1,72,056 INR to ₹2,42,472 INR, with a median of ₹1,82,036 INR. At least 8 retailers stock this exact specification. Half of all listings fall between ₹1,69,691 INR and ₹1,71,683 INR per carat. The same specification in natural form lists at a median of about ₹2,10,095 INR per carat.

Three of the best scored stones at this specification right now:

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

₹59,975 INR

Highest Price

₹3,93,935 INR

Average Price

₹1,96,170 INR

Market Intelligence

Retailers Selling

Price Spread

1.2%

Price Range

Price per carat distribution across retailers

$1,785/ct

10th Percentile

$1,747

Median

$1,785

90th Percentile

$1,921

Score Distribution

79 diamonds scored across 3 quality tiers

Excellent

1 (1.3%)

Good

8 (10.1%)

Average

70 (88.6%)

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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