How much does a 1.00 to 1.49ct G I1 natural cushion diamond cost?

As of November 2026, 1.00 to 1.49ct G I1 natural cushion diamonds typically cost HK$9,098 HKD to HK$32,587 HKD, with a median price of HK$17,960 HKD. There are currently 52 diamonds matching this specification available across retailers.

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

About 17% of these diamonds are available at multiple retailers, with an average price spread of 46%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct G I1 Natural Cushion

Quick answer

As of November 2026, there are 52 natural cushion diamonds with G colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run HK$9,098 HKD to HK$32,587 HKD, with a median of HK$17,960 HKD. At least 20 retailers stock this exact specification, and 17% of the stones appear at more than one of them, with an average price spread of 46%. Half of all listings fall between HK$11,334 HKD and HK$18,251 HKD per carat. Over the last 30 days the median price moved -3.9% and the number of listings moved +11.2%.

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. Cushion natural stones in the index: 2,881 USD per carat, -2.5% 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

Lowest Price

HK$6,457 HKD

Highest Price

HK$36,288 HKD

Average Price

HK$20,194 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

17.5%

Price Spread

46.4%

30-Day Price Trend

-3.9%

30-Day Supply Change

+11.2%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,900/ct

10th Percentile

$1,082

Median

$1,900

90th Percentile

$2,877

Score Distribution

184 diamonds scored across 4 quality tiers

Excellent

3 (1.6%)

Very Good

29 (15.8%)

Good

37 (20.1%)

Average

115 (62.5%)

Find Your Diamond

Search 52 G I1 cushion diamonds and compare prices.

Search Diamonds

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

Save 18%

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