How much does a 5.00ct+ I VS2 natural round diamond cost?

As of October 2026, 5.00ct+ I VS2 natural round diamonds typically cost $125,933 NZD to $348,546 NZD, with a median price of $187,802 NZD. There are currently 80 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS2 round diamond?

About 24% of these diamonds are available at multiple retailers, with an average price spread of 26%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ I VS2 Natural Round

Quick answer

As of October 2026, there are 80 natural round diamonds with I colour and VS2 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $125,933 NZD to $348,546 NZD, with a median of $187,802 NZD. At least 25 retailers stock this exact specification, and 24% of the stones appear at more than one of them, with an average price spread of 26%. Half of all listings fall between $53,756 NZD and $69,695 NZD per carat. The same specification in lab grown form lists at a median of about $758 NZD per carat. Over the last 30 days the median price moved -2.6% and the number of listings moved -8.6%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

$76,864 NZD

Highest Price

$1,833,912 NZD

Average Price

$237,202 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

24.3%

Price Spread

25.6%

30-Day Price Trend

-2.6%

30-Day Supply Change

-8.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$35,129/ct

10th Percentile

$26,708

Median

$35,129

90th Percentile

$42,410

Score Distribution

210 diamonds scored across 4 quality tiers

Excellent

57 (27.1%)

Very Good

45 (21.4%)

Good

50 (23.8%)

Average

58 (27.6%)

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Consider Instead

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

I SI1SI1 inclusions are not visible without magnification

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Lab-Grown I VS2Same specifications, lab-grown origin

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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