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 $105,754 SGD to $405,993 SGD, with a median price of $164,671 SGD. There are currently 101 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 101 natural round diamonds with I colour and VS1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $105,754 SGD to $405,993 SGD, with a median of $164,671 SGD. 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 $32,680 SGD and $53,664 SGD per carat. The same specification in lab grown form lists at a median of about $638 SGD 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

101

Lowest Price

$66,845 SGD

Highest Price

$1,656,624 SGD

Average Price

$225,674 SGD

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

260 diamonds scored across 4 quality tiers

Excellent

54 (20.8%)

Very Good

49 (18.8%)

Good

69 (26.5%)

Average

88 (33.8%)

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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