How much does a 0.20 to 0.49ct I VS1 natural marquise diamond cost?

As of November 2026, 0.20 to 0.49ct I VS1 natural marquise diamonds typically cost $494 NZD to $1,264 NZD, with a median price of $795 NZD. There are currently 228 diamonds matching this specification available across retailers.

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

About 44% of these diamonds are available at multiple retailers, with an average price spread of 41%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct I VS1 Natural Marquise

Quick answer

As of November 2026, there are 228 natural marquise diamonds with I colour and VS1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $494 NZD to $1,264 NZD, with a median of $795 NZD. At least 16 retailers stock this exact specification, and 44% of the stones appear at more than one of them, with an average price spread of 41%. Half of all listings fall between $1,877 NZD and $2,936 NZD per carat. The same specification in lab grown form lists at a median of about $1,201 NZD per carat. Over the last 30 days the median price moved -2.0% and the number of listings moved +1.4%.

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. Marquise natural stones in the index: 2,268 USD per carat, +10.8% 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

228

Lowest Price

$302 NZD

Highest Price

$2,866 NZD

Average Price

$853 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

43.8%

Price Spread

41.0%

30-Day Price Trend

-2.0%

30-Day Supply Change

+1.4%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,457/ct

10th Percentile

$846

Median

$1,457

90th Percentile

$1,785

Score Distribution

469 diamonds scored across 4 quality tiers

Excellent

110 (23.5%)

Very Good

139 (29.6%)

Good

73 (15.6%)

Average

147 (31.3%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

I VS2VS2 inclusions are not visible without magnification

Save 16%

Lab-Grown I VS1Same specifications, lab-grown origin

Save 54%

Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1