How much does a 0.50 to 0.74ct G SI1 natural oval diamond cost?

As of October 2026, 0.50 to 0.74ct G SI1 natural oval diamonds typically cost $976 NZD to $2,984 NZD, with a median price of $1,476 NZD. There are currently 1,544 diamonds matching this specification available across retailers.

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

About 24% of these diamonds are available at multiple retailers, with an average price spread of 46%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct G SI1 Natural Oval

Quick answer

As of October 2026, there are 1,544 natural oval diamonds with G colour and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $976 NZD to $2,984 NZD, with a median of $1,476 NZD. At least 64 retailers stock this exact specification, and 24% of the stones appear at more than one of them, with an average price spread of 46%. Half of all listings fall between $2,328 NZD and $3,598 NZD per carat. The same specification in lab grown form lists at a median of about $1,376 NZD per carat. Over the last 30 days the median price moved -2.5% and the number of listings moved +8.9%.

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

1,544

Lowest Price

$557 NZD

Highest Price

$5,329 NZD

Average Price

$1,787 NZD