How much does a 3.00 to 4.99ct I VS1 lab grown radiant diamond cost?

As of October 2026, 3.00 to 4.99ct I VS1 lab grown radiant diamonds typically cost $843 SGD to $5,186 SGD, with a median price of $1,492 SGD. There are currently 49 diamonds matching this specification available across retailers.

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

About 23% of these diamonds are available at multiple retailers, with an average price spread of 125%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I VS1 Lab Grown Radiant

Quick answer

As of October 2026, there are 49 lab grown radiant diamonds with I colour and VS1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $843 SGD to $5,186 SGD, with a median of $1,492 SGD. At least 38 retailers stock this exact specification, and 23% of the stones appear at more than one of them, with an average price spread of 125%. Half of all listings fall between $394 SGD and $1,147 SGD per carat. The same specification in natural form lists at a median of about $19,779 SGD per carat. Over the last 30 days the median price moved +16.7% and the number of listings moved +3.5%.

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

$574 SGD

Highest Price

$12,360 SGD

Average Price

$2,437 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

23.4%

Price Spread

124.6%

30-Day Price Trend

+16.7%

30-Day Supply Change

+3.5%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$471/ct

10th Percentile

$204

Median

$471

90th Percentile

$1,701

Score Distribution

74 diamonds scored across 4 quality tiers

Excellent

15 (20.3%)

Very Good

18 (24.3%)

Good

27 (36.5%)

Average

14 (18.9%)

Find Your Diamond

Search 49 I VS1 radiant diamonds and compare prices.

Search Diamonds

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