How much does a 2.00 to 2.99ct I SI1 lab grown oval diamond cost?

As of September 2026, 2.00 to 2.99ct I SI1 lab grown oval diamonds typically cost $3,556 NZD to $7,527 NZD, with a median price of $3,676 NZD. There are currently 668 diamonds matching this specification available across retailers.

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

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2.00 to 2.99ct I SI1 Lab Grown Oval

Quick answer

As of September 2026, there are 668 lab grown oval diamonds with I colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $3,556 NZD to $7,527 NZD, with a median of $3,676 NZD. At least 24 retailers stock this exact specification. Half of all listings fall between $1,781 NZD and $3,961 NZD per carat. The same specification in natural form lists at a median of about $14,483 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. Oval lab grown stones in the index: 487 USD per carat, -11.2% 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

668

Lowest Price

$1,307 NZD

Highest Price

$66,248 NZD

Average Price

$5,410 NZD

Market Intelligence

Retailers Selling

Price Spread

69.9%

Price Range

Price per carat distribution across retailers

$1,816/ct

10th Percentile

$1,035

Median

$1,816

90th Percentile

$2,331

Score Distribution

668 diamonds scored across 4 quality tiers

Excellent

65 (9.7%)

Very Good

357 (53.4%)

Good

47 (7.0%)

Average

199 (29.8%)

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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