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

As of October 2026, 1.00 to 1.49ct I VS1 lab grown cushion diamonds typically cost $300 SGD to $1,826 SGD, with a median price of $583 SGD. There are currently 16 diamonds matching this specification available across retailers.

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

About 16% of these diamonds are available at multiple retailers, with an average price spread of 67%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I VS1 Lab Grown Cushion

Quick answer

As of October 2026, there are 16 lab grown cushion diamonds with I colour and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $300 SGD to $1,826 SGD, with a median of $583 SGD. At least 37 retailers stock this exact specification, and 16% of the stones appear at more than one of them, with an average price spread of 67%. Half of all listings fall between $486 SGD and $920 SGD per carat. The same specification in natural form lists at a median of about $3,890 SGD per carat. Over the last 30 days the median price moved +4.5% and the number of listings moved -1.8%.

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. Cushion lab grown stones in the index: 516 USD per carat, +6.9% 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

$214 SGD

Highest Price

$2,562 SGD

Average Price

$957 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

16.2%

Price Spread

67.0%

30-Day Price Trend

+4.5%

30-Day Supply Change

-1.8%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$506/ct

10th Percentile

$284

Median

$506

90th Percentile

$920

Score Distribution

34 diamonds scored across 4 quality tiers

Excellent

7 (20.6%)

Very Good

7 (20.6%)

Good

9 (26.5%)

Average

11 (32.4%)

Find Your Diamond

Search 16 I VS1 cushion 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