How much does a 1.00 to 1.49ct I VS1 lab grown radiant diamond cost?

As of October 2026, 1.00 to 1.49ct I VS1 lab grown radiant diamonds typically cost $207 USD to $1,101 USD, with a median price of $479 USD. There are currently 51 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS1 radiant diamond?

About 31% of these diamonds are available at multiple retailers, with an average price spread of 68%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I VS1 Lab Grown Radiant

Quick answer

As of October 2026, there are 51 lab grown radiant diamonds with I color and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $207 USD to $1,101 USD, with a median of $479 USD. At least 45 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 68%. Half of all listings fall between $346 USD and $661 USD per carat. The same specification in natural form lists at a median of about $3,815 USD per carat. Over the last 30 days the median price moved +6.1% and the number of listings moved +9.8%.

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

$129 USD

Highest Price

$2,241 USD

Average Price

$614 USD

Market Intelligence

Retailers Selling

Cross Retailer %

31.2%

Price Spread

68.0%

30-Day Price Trend

+6.1%

30-Day Supply Change

+9.8%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$464/ct

10th Percentile

$212

Median

$464

90th Percentile

$1,007

Score Distribution

114 diamonds scored across 4 quality tiers

Excellent

21 (18.4%)

Very Good

12 (10.5%)

Good

46 (40.4%)

Average

35 (30.7%)

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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