How much does a 0.20 to 0.49ct E SI2 natural round diamond cost?

As of October 2026, 0.20 to 0.49ct E SI2 natural round diamonds typically cost HK$2,262 HKD to HK$6,939 HKD, with a median price of HK$4,047 HKD. There are currently 13,493 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI2 round diamond?

About 33% 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.

0.20 to 0.49ct E SI2 Natural Round

Quick answer

As of October 2026, there are 13,493 natural round diamonds with E colour and SI2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run HK$2,262 HKD to HK$6,939 HKD, with a median of HK$4,047 HKD. At least 34 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 57%. Half of all listings fall between HK$8,717 HKD and HK$14,927 HKD per carat. The same specification in lab grown form lists at a median of about HK$5,038 HKD per carat. Over the last 30 days the median price moved -3.4% and the number of listings moved +7.8%.

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. 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

13,493

Lowest Price

HK$612 HKD

Highest Price

HK$18,525 HKD

Average Price

HK$4,350 HKD