How much does a 1.00 to 1.49ct H SI1 natural round diamond cost?

As of September 2026, 1.00 to 1.49ct H SI1 natural round diamonds typically cost $2,772 CAD to $6,415 CAD, with a median price of $3,917 CAD. There are currently 8,052 diamonds matching this specification available across retailers.

Where can I find the best price on a H SI1 round diamond?

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1.00 to 1.49ct H SI1 Natural Round

Quick answer

As of September 2026, there are 8,052 natural round diamonds with H color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,772 CAD to $6,415 CAD, with a median of $3,917 CAD. At least 64 retailers stock this exact specification. Half of all listings fall between $3,244 CAD and $4,379 CAD per carat. The same specification in lab grown form lists at a median of about $2,854 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

8,052

Lowest Price

$665 CAD

Highest Price

$23,464 CAD

Average Price

$4,348 CAD

Market Intelligence

Retailers Selling

Price Spread

30.1%

Price Range

Price per carat distribution across retailers

$2,792/ct

10th Percentile

$2,058

Median

$2,792

90th Percentile

$3,923

Score Distribution

8.1K diamonds scored across 4 quality tiers

Excellent

986 (12.2%)

Very Good

2,449 (30.4%)

Good

2,901 (36.0%)

Average

1,714 (21.3%)

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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