How much does a 1.00 to 1.49ct I VS1 natural round diamond cost?

As of October 2026, 1.00 to 1.49ct I VS1 natural round diamonds typically cost $4,077 NZD to $11,230 NZD, with a median price of $6,407 NZD. There are currently 3,031 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS1 round diamond?

About 42% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I VS1 Natural Round

Quick answer

As of October 2026, there are 3,031 natural round diamonds with I colour and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $4,077 NZD to $11,230 NZD, with a median of $6,407 NZD. At least 75 retailers stock this exact specification, and 42% of the stones appear at more than one of them, with an average price spread of 48%. Half of all listings fall between $5,246 NZD and $8,353 NZD per carat. The same specification in lab grown form lists at a median of about $800 NZD per carat. Over the last 30 days the median price moved -1.8% and the number of listings moved +14.5%.

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. 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

3,031

Lowest Price

$2,418 NZD

Highest Price

$25,853 NZD

Average Price

$7,182 NZD