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

As of October 2026, 1.00 to 1.49ct G SI2 natural radiant diamonds typically cost $1,547 USD to $4,915 USD, with a median price of $2,742 USD. There are currently 208 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 56%. 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 October 2026, there are 208 natural radiant diamonds with G color and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,547 USD to $4,915 USD, with a median of $2,742 USD. 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 56%. Half of all listings fall between $1,829 USD and $3,149 USD per carat. The same specification in lab grown form lists at a median of about $428 USD per carat. Over the last 30 days the median price moved +0.2% and the number of listings moved +15.8%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Radiant natural stones in the index: 3,091 USD per carat, +13.2% 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: October 2026

Available

208

Lowest Price

$704 USD

Highest Price

$9,980 USD

Average Price

$3,026 USD

Market Intelligence

Retailers Selling

Cross Retailer %

34.8%

Price Spread

56.4%

30-Day Price Trend

+0.2%

30-Day Supply Change

+15.8%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$2,339/ct

10th Percentile

$1,485

Median

$2,339

90th Percentile

$4,263

Score Distribution

606 diamonds scored across 4 quality tiers

Excellent

110 (18.2%)

Very Good

107 (17.7%)

Good

125 (20.6%)

Average

264 (43.6%)

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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