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

As of October 2026, 5.00ct+ I VS1 natural round diamonds typically cost HK$650,415 HKD to HK$2,508,110 HKD, with a median price of HK$1,010,697 HKD. There are currently 99 diamonds matching this specification available across retailers.

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

About 33% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ I VS1 Natural Round

Quick answer

As of October 2026, there are 99 natural round diamonds with I colour and VS1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run HK$650,415 HKD to HK$2,508,110 HKD, with a median of HK$1,010,697 HKD. At least 32 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 48%. Half of all listings fall between HK$200,577 HKD and HK$329,373 HKD per carat. The same specification in lab grown form lists at a median of about HK$3,917 HKD 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

HK$410,272 HKD

Highest Price

HK$10,167,816 HKD

Average Price

HK$1,384,227 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

32.6%

Price Spread

48.1%

30-Day Price Trend

-2.6%

30-Day Supply Change

-8.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$34,133/ct

10th Percentile

$22,341

Median

$34,133

90th Percentile

$45,674

Score Distribution

256 diamonds scored across 4 quality tiers

Excellent

53 (20.7%)

Very Good

46 (18.0%)

Good

71 (27.7%)

Average

86 (33.6%)

Find Your Diamond

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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 47%

Lab-Grown I VS1Same specifications, lab-grown origin

Save 98%

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