How much does a 2.00 to 2.99ct J SI1 lab grown round diamond cost?

As of September 2026, 2.00 to 2.99ct J SI1 lab grown round diamonds typically cost $1,737 NZD to $6,984 NZD, with a median price of $4,195 NZD. There are currently 1,281 diamonds matching this specification available across retailers.

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

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2.00 to 2.99ct J SI1 Lab Grown Round

Quick answer

As of September 2026, there are 1,281 lab grown round diamonds with J colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $1,737 NZD to $6,984 NZD, with a median of $4,195 NZD. At least 23 retailers stock this exact specification. Half of all listings fall between $1,759 NZD and $3,118 NZD per carat. The same specification in natural form lists at a median of about $9,949 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 lab grown stones in the index: 438 USD per carat, -14.1% 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

1,281

Lowest Price

$731 NZD

Highest Price

$45,242 NZD

Average Price

$4,486 NZD

Market Intelligence

Retailers Selling

Price Spread

60.3%

Price Range

Price per carat distribution across retailers

$1,299/ct

10th Percentile

$510

Median

$1,299

90th Percentile

$1,963

Score Distribution

1.3K diamonds scored across 4 quality tiers

Excellent

380 (29.7%)

Very Good

414 (32.3%)

Good

418 (32.6%)

Average

69 (5.4%)

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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