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

As of September 2026, 5.00ct+ I VS1 lab grown round diamonds typically cost $14,456 NZD to $18,386 NZD, with a median price of $18,107 NZD. There are currently 239 diamonds matching this specification available across retailers.

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

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

5.00ct+ I VS1 Lab Grown Round

Quick answer

As of September 2026, there are 239 lab grown round diamonds with I colour and VS1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $14,456 NZD to $18,386 NZD, with a median of $18,107 NZD. At least 24 retailers stock this exact specification. Half of all listings fall between $1,094 NZD and $2,191 NZD per carat. The same specification in natural form lists at a median of about $39,784 NZD 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. Round lab grown stones in the index: 438 USD per carat, -14.1% 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

239

Lowest Price

$2,039 NZD

Highest Price

$1,859,004 NZD

Average Price

$28,881 NZD

Market Intelligence

Retailers Selling

Price Spread

74.3%

Price Range

Price per carat distribution across retailers

$850/ct

10th Percentile

$445

Median

$850

90th Percentile

$1,736

Score Distribution

239 diamonds scored across 4 quality tiers

Excellent

3 (1.3%)

Very Good

6 (2.5%)

Good

180 (75.3%)

Average

50 (20.9%)

Find Your Diamond

Search 239 I VS1 round diamonds and compare prices.

Search Diamonds

Consider Instead

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

J VS1J colour is visually identical to I to the naked eye

Save 30%

I VS2VS2 inclusions are not visible without magnification

Save 14%

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