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 $267 SGD to $1,407 SGD, with a median price of $610 SGD. There are currently 52 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 52 lab grown radiant diamonds with I colour and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $267 SGD to $1,407 SGD, with a median of $610 SGD. 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 $443 SGD and $847 SGD per carat. The same specification in natural form lists at a median of about $4,889 SGD 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

$165 SGD

Highest Price

$2,872 SGD

Average Price

$784 SGD

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

115 diamonds scored across 4 quality tiers

Excellent

21 (18.3%)

Very Good

13 (11.3%)

Good

46 (40.0%)

Average

35 (30.4%)

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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