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

As of October 2026, 1.50 to 1.99ct E I1 natural oval diamonds typically cost $6,146 AUD to $18,269 AUD, with a median price of $11,080 AUD. There are currently 38 diamonds matching this specification available across retailers.

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

About 17% 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 E I1 Natural Oval

Quick answer

As of October 2026, there are 38 natural oval diamonds with E colour and I1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $6,146 AUD to $18,269 AUD, with a median of $11,080 AUD. At least 28 retailers stock this exact specification, and 17% of the stones appear at more than one of them, with an average price spread of 57%. Half of all listings fall between $4,753 AUD and $8,265 AUD per carat. Over the last 30 days the median price moved -3.5% and the number of listings moved +4.9%.

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

$4,020 AUD

Highest Price

$23,008 AUD

Average Price

$11,762 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

16.7%

Price Spread

56.8%

30-Day Price Trend

-3.5%

30-Day Supply Change

+4.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$4,343/ct

10th Percentile

$2,674

Median

$4,343

90th Percentile

$6,865

Score Distribution

220 diamonds scored across 4 quality tiers

Excellent

25 (11.4%)

Very Good

21 (9.5%)

Good

21 (9.5%)

Average

153 (69.5%)

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Consider Instead

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

F I1F colour is visually identical to E to the naked eye

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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