How much does a 1.00 to 1.49ct G I1 lab grown marquise diamond cost?

As of August 2026, 1.00 to 1.49ct G I1 lab grown marquise diamonds typically cost $2,017 NZD to $4,657 NZD, with a median price of $4,083 NZD. There are currently 3 diamonds matching this specification available across retailers.

Where can I find the best price on a G I1 marquise diamond?

About 10% of these diamonds are available at multiple retailers, with an average price spread of 84%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct G I1 Lab Grown Marquise

Last updated: August 2026

Available

Lowest Price

$1,500 NZD

Highest Price

$4,801 NZD

Average Price

$3,461 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

10.0%

Price Spread

83.7%

30-Day Price Trend

N/A

30-Day Supply Change

N/A

Volatility (30d)

N/A

Price Range

Price per carat distribution across retailers

$2,061/ct

10th Percentile

$824

Median

$2,061

90th Percentile

$3,675

Score Distribution

3 diamonds scored across 2 quality tiers

Good

2 (66.7%)

Average

1 (33.3%)

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Search 3 G I1 marquise diamonds and compare prices.

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Consider Instead

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

H I1H colour is visually identical to G to the naked eye

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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