How much does a 0.20 to 0.49ct E I1 natural round diamond cost?

As of October 2026, 0.20 to 0.49ct E I1 natural round diamonds typically cost $266 AUD to $1,181 AUD, with a median price of $631 AUD. There are currently 868 diamonds matching this specification available across retailers.

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

About 46% of these diamonds are available at multiple retailers, with an average price spread of 85%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct E I1 Natural Round

Quick answer

As of October 2026, there are 868 natural round diamonds with E colour and I1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $266 AUD to $1,181 AUD, with a median of $631 AUD. At least 20 retailers stock this exact specification, and 46% of the stones appear at more than one of them, with an average price spread of 85%. Half of all listings fall between $1,329 AUD and $2,902 AUD per carat. The same specification in lab grown form lists at a median of about $807 AUD per carat. Over the last 30 days the median price moved -8.1% and the number of listings moved +17.0%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

868

Lowest Price

$120 AUD

Highest Price

$2,717 AUD

Average Price

$674 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

46.4%

Price Spread

85.1%

30-Day Price Trend

-8.1%

30-Day Supply Change

+17.0%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,300/ct

10th Percentile

$619

Median

$1,300

90th Percentile

$3,985

Score Distribution

1.7K diamonds scored across 4 quality tiers

Excellent

371 (21.7%)

Very Good

366 (21.5%)

Good

341 (20.0%)

Average

628 (36.8%)

Find Your Diamond

Search 868 E I1 round diamonds and compare prices.

Search Diamonds

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

Save 24%

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