How much does a 1.50 - 1.99ct I SI2 natural round diamond cost?

As of April 2026, 1.50 - 1.99ct I SI2 natural round diamonds are available from $80 SGD to $1,104,158 SGD, with an average price of $8,807 SGD. There are currently 17,099 diamonds matching this specification available across retailers.

Where can I find the best price on a I SI2 round diamond?

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1.50 - 1.99ct I SI2 Natural Round

As of April 2026, there are 17,099 natural round diamonds with I color and SI2 clarity in the 1.50 - 1.99ct range available across retailers worldwide. Prices range from $80 SGD to $1,104,158 SGD, with an average of $8,807 SGD.

Last updated: April 2026

Available

17,099

Lowest Price

$80 SGD

Highest Price

$1,104,158 SGD

Average Price

$8,807 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

N/A

Price Spread

51.0%

30-Day Price Trend

N/A

30-Day Supply Change

N/A

Volatility (30d)

N/A

Price Range

Price per carat distribution across retailers

$3,833/ct

10th Percentile

$2,312

Median

$3,833

90th Percentile

$6,142

Score Distribution

17.1K diamonds scored across 4 quality tiers

Excellent

3,638 (21.3%)

Very Good

6,772 (39.7%)

Good

4,018 (23.5%)

Average

2,648 (15.5%)

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

J SI2J colour is visually identical to I to the naked eye

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Lab-Grown I SI2Same 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