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

As of October 2026, 1.00 to 1.49ct F SI2 lab grown radiant diamonds typically cost $204 USD to $966 USD, with a median price of $517 USD. There are currently 12 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 92%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct F SI2 Lab Grown Radiant

Quick answer

As of October 2026, there are 12 lab grown radiant diamonds with F color and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $204 USD to $966 USD, with a median of $517 USD. At least 31 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 92%. Half of all listings fall between $275 USD and $675 USD per carat. The same specification in natural form lists at a median of about $2,824 USD per carat. Over the last 30 days the median price moved +2.7% and the number of listings moved +11.8%.

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 lab grown stones in the index: 474 USD per carat, -2.1% 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

$158 USD

Highest Price

$1,382 USD

Average Price

$560 USD

Market Intelligence

Retailers Selling

Cross Retailer %

34.8%

Price Spread

91.6%

30-Day Price Trend

+2.7%

30-Day Supply Change

+11.8%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$437/ct

10th Percentile

$192

Median

$437

90th Percentile

$974

Score Distribution

24 diamonds scored across 4 quality tiers

Excellent

5 (20.8%)

Very Good

1 (4.2%)

Good

8 (33.3%)

Average

10 (41.7%)

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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