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

As of September 2026, 1.00 to 1.49ct G SI2 natural round diamonds typically cost $2,324 CAD to $5,793 CAD, with a median price of $3,428 CAD. There are currently 8,370 diamonds matching this specification available across retailers.

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

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1.00 to 1.49ct G SI2 Natural Round

Quick answer

As of September 2026, there are 8,370 natural round diamonds with G color and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,324 CAD to $5,793 CAD, with a median of $3,428 CAD. At least 57 retailers stock this exact specification. Half of all listings fall between $2,936 CAD and $4,156 CAD per carat. The same specification in lab grown form lists at a median of about $3,647 CAD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Round natural stones in the index: 2,094 USD per carat, -3.8% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

8,370

Lowest Price

$671 CAD

Highest Price

$24,167 CAD

Average Price

$3,799 CAD

Market Intelligence

Retailers Selling

Price Spread

34.8%

Price Range

Price per carat distribution across retailers

$2,528/ct

10th Percentile

$1,799

Median

$2,528

90th Percentile

$3,714

Score Distribution

8.4K diamonds scored across 4 quality tiers

Excellent

2,094 (25.0%)

Very Good

2,726 (32.6%)

Good

2,052 (24.5%)

Average

1,498 (17.9%)

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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