How much does a 2.00 to 2.99ct M SI1 natural round diamond cost?

As of November 6, 2026, 2.00 to 2.99ct M SI1 natural round diamonds typically cost $7,979 NZD to $17,376 NZD, with a median price of $11,342 NZD. There are currently 215 diamonds matching this specification available across retailers.

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

About 53% of these diamonds are available at multiple retailers, with an average price spread of 34%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct M SI1 Natural Round

Quick answer

As of November 6, 2026, there are 215 natural round diamonds with M colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $7,979 NZD to $17,376 NZD, with a median of $11,342 NZD. Half of all listings fall between $4,494 NZD and $6,274 NZD per carat. The same specification in lab grown form lists at a median of about $1,233 NZD per carat. Over the last 30 days the median price moved +0.8% and the number of listings moved +5.2%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Round natural stones in the index: 2,124 USD per carat, -6.9% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

215

Lowest Price

$5,853 NZD

Highest Price

$31,138 NZD

Average Price

$12,135 NZD

Market Intelligence

Cross Retailer %

53.5%

Price Spread

33.9%

30-Day Price Trend

+0.8%

30-Day Supply Change

+5.2%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$2,954/ct

10th Percentile

$2,153

Median

$2,954

90th Percentile

$4,209

Score Distribution

215 diamonds scored across 4 quality tiers

Excellent

34 (15.8%)

Very Good

85 (39.5%)

Good

56 (26.0%)

Average

40 (18.6%)

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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