How much does a 1.50 to 1.99ct G SI2 natural heart diamond cost?

As of November 2026, 1.50 to 1.99ct G SI2 natural heart diamonds typically cost $4,913 NZD to $16,623 NZD, with a median price of $8,768 NZD. There are currently 234 diamonds matching this specification available across retailers.

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

About 42% 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.

1.50 to 1.99ct G SI2 Natural Heart

Quick answer

As of November 2026, there are 234 natural heart diamonds with G colour and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $4,913 NZD to $16,623 NZD, with a median of $8,768 NZD. At least 54 retailers stock this exact specification, and 42% of the stones appear at more than one of them, with an average price spread of 57%. Half of all listings fall between $4,458 NZD and $7,696 NZD per carat. Over the last 30 days the median price moved -1.8% and the number of listings moved +11.7%.

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. Heart natural stones in the index: 2,374 USD per carat, +9.8% 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

234

Lowest Price

$2,670 NZD

Highest Price

$40,915 NZD

Average Price

$10,207 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

42.1%

Price Spread

56.5%

30-Day Price Trend

-1.8%

30-Day Supply Change

+11.7%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$3,228/ct

10th Percentile

$2,062

Median

$3,228

90th Percentile

$5,490

Score Distribution

634 diamonds scored across 4 quality tiers

Excellent

166 (26.2%)

Very Good

128 (20.2%)

Good

92 (14.5%)

Average

248 (39.1%)

Find Your Diamond

Search 234 G SI2 heart diamonds and compare prices.

Search Diamonds

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

Save 6%

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