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

As of September 2026, 1.00 to 1.49ct D SI2 natural round diamonds typically cost $3,625 NZD to $9,068 NZD, with a median price of $4,893 NZD. There are currently 3,579 diamonds matching this specification available across retailers.

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

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

1.00 to 1.49ct D SI2 Natural Round

Quick answer

As of September 2026, there are 3,579 natural round diamonds with D colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,625 NZD to $9,068 NZD, with a median of $4,893 NZD. At least 58 retailers stock this exact specification. Half of all listings fall between $4,018 NZD and $5,628 NZD per carat. The same specification in lab grown form lists at a median of about $2,829 NZD 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

3,579

Lowest Price

$2,047 NZD

Highest Price

$45,105 NZD

Average Price

$5,710 NZD

Market Intelligence

Retailers Selling

Price Spread

34.0%

Price Range

Price per carat distribution across retailers

$2,760/ct

10th Percentile

$2,028

Median

$2,760

90th Percentile

$4,125

Score Distribution

3.6K diamonds scored across 4 quality tiers

Excellent

1,000 (27.9%)

Very Good

1,141 (31.9%)

Good

812 (22.7%)

Average

626 (17.5%)

Find Your Diamond

Search 3,579 D SI2 round diamonds and compare prices.

Search Diamonds

Consider Instead

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

D I1I1 inclusions are not visible without magnification

Save 10%

Lab-Grown D SI2Same specifications, lab-grown origin

Save 20%

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