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

As of October 2026, 1.00 to 1.49ct J VS1 lab grown cushion diamonds typically cost HK$2,749 HKD to HK$7,662 HKD, with a median price of HK$4,143 HKD. There are currently 4 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 50%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J VS1 Lab Grown Cushion

Quick answer

As of October 2026, there are 4 lab grown cushion diamonds with J colour and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run HK$2,749 HKD to HK$7,662 HKD, with a median of HK$4,143 HKD. At least 16 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 50%. Half of all listings fall between HK$3,837 HKD and HK$6,550 HKD per carat. The same specification in natural form lists at a median of about HK$18,642 HKD per carat. Over the last 30 days the median price moved -25.3% and the number of listings moved -11.5%.

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. 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

HK$2,385 HKD

Highest Price

HK$12,486 HKD

Average Price

HK$4,851 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

38.5%

Price Spread

50.4%

30-Day Price Trend

-25.3%

30-Day Supply Change

-11.5%

Volatility (30d)

0.17

Price Range

Price per carat distribution across retailers

$686/ct

10th Percentile

$389

Median

$686

90th Percentile

$1,046

Score Distribution

6 diamonds scored across 2 quality tiers

Excellent

3 (50.0%)

Good

3 (50.0%)

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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