How much does a 1.00 to 1.49ct I SI2 natural round diamond cost?

As of July 2026, 1.00 to 1.49ct I SI2 natural round diamonds typically cost $1,828 SGD to $5,613 SGD, with a median price of $2,937 SGD. There are currently 4,495 diamonds matching this specification available across retailers.

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

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

1.00 to 1.49ct I SI2 Natural Round

Last updated: July 2026

Available

4,495

Lowest Price

$830 SGD

Highest Price

$23,213 SGD

Average Price

$3,339 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

N/A

Price Spread

43.0%

30-Day Price Trend

N/A

30-Day Supply Change

N/A

Volatility (30d)

N/A

Price Range

Price per carat distribution across retailers

$2,359/ct

10th Percentile

$1,563

Median

$2,359

90th Percentile

$3,670

Score Distribution

4.5K diamonds scored across 4 quality tiers

Excellent

1,610 (35.8%)

Very Good

1,341 (29.8%)

Good

979 (21.8%)

Average

565 (12.6%)

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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