How much does a 0.20 to 0.49ct J I1 natural oval diamond cost?

As of October 2026, 0.20 to 0.49ct J I1 natural oval diamonds typically cost $405 AUD to $838 AUD, with a median price of $591 AUD. There are currently 4 diamonds matching this specification available across retailers.

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

About 33% of these diamonds are available at multiple retailers, with an average price spread of 64%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct J I1 Natural Oval

Quick answer

As of October 2026, there are 4 natural oval diamonds with J colour and I1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $405 AUD to $838 AUD, with a median of $591 AUD. At least 10 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 64%. Half of all listings fall between $1,168 AUD and $2,087 AUD per carat.

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

$228 AUD

Highest Price

$1,470 AUD

Average Price

$614 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

33.3%

Price Spread

63.8%

Price Range

Price per carat distribution across retailers

$1,013/ct

10th Percentile

$756

Median

$1,013

90th Percentile

$2,740

Score Distribution

43 diamonds scored across 3 quality tiers

Very Good

3 (7.0%)

Good

4 (9.3%)

Average

36 (83.7%)

Find Your Diamond

Search 4 J I1 oval diamonds and compare prices.

Search Diamonds

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