How much does a 1.50 - 1.99ct G SI2 lab grown round diamond cost?

As of April 2026, 1.50 - 1.99ct G SI2 lab grown round diamonds are available from $95 NZD to $142,567 NZD, with an average price of $2,562 NZD. There are currently 4,522 diamonds matching this specification available across retailers.

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

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1.50 - 1.99ct G SI2 Lab Grown Round

As of April 2026, there are 4,522 lab grown round diamonds with G color and SI2 clarity in the 1.50 - 1.99ct range available across retailers worldwide. Prices range from $95 NZD to $142,567 NZD, with an average of $2,562 NZD.

Last updated: April 2026

Available

4,522

Lowest Price

$95 NZD

Highest Price

$142,567 NZD

Average Price

$2,562 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

N/A

Price Spread

76.8%

30-Day Price Trend

N/A

30-Day Supply Change

N/A

Volatility (30d)

N/A

Price Range

Price per carat distribution across retailers

$3,455/ct

10th Percentile

$516

Median

$3,455

90th Percentile

$5,920

Score Distribution

4.5K diamonds scored across 4 quality tiers

Excellent

1,235 (27.3%)

Very Good

2,015 (44.6%)

Good

854 (18.9%)

Average

418 (9.2%)

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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