How much does a 1.00 to 1.49ct G SI2 natural radiant diamond cost?

As of November 2026, 1.00 to 1.49ct G SI2 natural radiant diamonds typically cost $2,731 NZD to $8,724 NZD, with a median price of $4,824 NZD. There are currently 211 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 57%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct G SI2 Natural Radiant

Quick answer

As of November 2026, there are 211 natural radiant diamonds with G colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,731 NZD to $8,724 NZD, with a median of $4,824 NZD. At least 54 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 57%. Half of all listings fall between $3,254 NZD and $5,623 NZD per carat. The same specification in lab grown form lists at a median of about $758 NZD per carat. Over the last 30 days the median price moved -0.1% and the number of listings moved +16.0%.

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. Radiant natural stones in the index: 3,108 USD per carat, +0.3% month on month. See the full index release

Figures come from current listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: November 2026

Available

211

Lowest Price

$1,244 NZD

Highest Price

$17,708 NZD

Average Price

$5,351 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

35.0%

Price Spread

56.7%

30-Day Price Trend

-0.1%

30-Day Supply Change

+16.0%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$2,354/ct

10th Percentile

$1,487

Median

$2,354

90th Percentile

$4,306

Score Distribution

614 diamonds scored across 4 quality tiers

Excellent

114 (18.6%)

Very Good

112 (18.2%)

Good

124 (20.2%)

Average

264 (43.0%)

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Consider Instead

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

H SI2H colour is visually identical to G to the naked eye

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Lab-Grown G SI2Same specifications, lab-grown origin

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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