How much does a 1.50 to 1.99ct G I1 natural oval diamond cost?

As of October 2026, 1.50 to 1.99ct G I1 natural oval diamonds typically cost $3,544 USD to $10,175 USD, with a median price of $6,358 USD. There are currently 75 diamonds matching this specification available across retailers.

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

About 20% of these diamonds are available at multiple retailers, with an average price spread of 43%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct G I1 Natural Oval

Quick answer

As of October 2026, there are 75 natural oval diamonds with G color and I1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $3,544 USD to $10,175 USD, with a median of $6,358 USD. At least 26 retailers stock this exact specification, and 20% of the stones appear at more than one of them, with an average price spread of 43%. Half of all listings fall between $3,188 USD and $4,883 USD per carat. Over the last 30 days the median price moved -1.1% and the number of listings moved +5.8%.

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. Oval natural stones in the index: 2,655 USD per carat, +10.2% 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

Lowest Price

$1,400 USD

Highest Price

$16,393 USD

Average Price

$6,561 USD

Market Intelligence

Retailers Selling

Cross Retailer %

19.6%

Price Spread

43.3%

30-Day Price Trend

-1.1%

30-Day Supply Change

+5.8%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$3,915/ct

10th Percentile

$2,174

Median

$3,915

90th Percentile

$5,967

Score Distribution

285 diamonds scored across 4 quality tiers

Excellent

33 (11.6%)

Very Good

44 (15.4%)

Good

34 (11.9%)

Average

174 (61.1%)

Find Your Diamond

Search 75 G I1 oval 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 15%

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