How much does a 5.00ct+ I VS1 lab grown cushion diamond cost?

As of September 2026, 5.00ct+ I VS1 lab grown cushion diamonds typically cost HK$9,094 HKD to HK$91,525 HKD, with a median price of HK$23,993 HKD. There are currently 52 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

5.00ct+ I VS1 Lab Grown Cushion

Quick answer

As of September 2026, there are 52 lab grown cushion diamonds with I colour and VS1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run HK$9,094 HKD to HK$91,525 HKD, with a median of HK$23,993 HKD. At least 23 retailers stock this exact specification. Half of all listings fall between HK$2,779 HKD and HK$7,843 HKD per carat. The same specification in natural form lists at a median of about HK$149,979 HKD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Cushion lab grown stones in the index: 466 USD per carat, -14.7% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

HK$6,198 HKD

Highest Price

HK$1,156,656 HKD

Average Price

HK$51,956 HKD

Market Intelligence

Retailers Selling

Price Spread

107.2%

Price Range

Price per carat distribution across retailers

$602/ct

10th Percentile

$280

Median

$602

90th Percentile

$1,639

Score Distribution

52 diamonds scored across 4 quality tiers

Excellent

8 (15.4%)

Very Good

11 (21.2%)

Good

18 (34.6%)

Average

15 (28.8%)

Find Your Diamond

Search 52 I VS1 cushion diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

I VS2VS2 inclusions are not visible without magnification

Save 7%

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