How much does a 1.00 to 1.49ct G SI1 natural oval diamond cost?

As of November 2026, 1.00 to 1.49ct G SI1 natural oval diamonds typically cost $3,907 NZD to $10,113 NZD, with a median price of $6,011 NZD. There are currently 857 diamonds matching this specification available across retailers.

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

About 35% 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.

1.00 to 1.49ct G SI1 Natural Oval

Quick answer

As of November 2026, there are 857 natural oval diamonds with G colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,907 NZD to $10,113 NZD, with a median of $6,011 NZD. At least 63 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 46%. Half of all listings fall between $4,671 NZD and $7,269 NZD per carat. The same specification in lab grown form lists at a median of about $843 NZD per carat. Over the last 30 days the median price moved +1.3% and the number of listings moved +1.5%.

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: November 2026

Available

857

Lowest Price

$2,307 NZD

Highest Price

$21,797 NZD

Average Price

$6,673 NZD