How much does a 2.00 to 2.99ct K SI1 natural oval diamond cost?

As of November 6, 2026, 2.00 to 2.99ct K SI1 natural oval diamonds typically cost $6,932 AUD to $20,725 AUD, with a median price of $12,222 AUD. There are currently 339 diamonds matching this specification available across retailers.

Where can I find the best price on a K SI1 oval diamond?

About 42% of these diamonds are available at multiple retailers, with an average price spread of 53%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct K SI1 Natural Oval

Quick answer

As of November 6, 2026, there are 339 natural oval diamonds with K colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $6,932 AUD to $20,725 AUD, with a median of $12,222 AUD. Half of all listings fall between $4,577 AUD and $7,664 AUD per carat. The same specification in lab grown form lists at a median of about $1,229 AUD per carat. Over the last 30 days the median price moved -1.7% and the number of listings moved +9.0%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Oval natural stones in the index: 2,512 USD per carat, -7.2% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

339

Lowest Price

$3,104 AUD

Highest Price

$37,741 AUD

Average Price

$13,271 AUD