How much does a 1.00 to 1.49ct H SI1 natural marquise diamond cost?

As of November 2026, 1.00 to 1.49ct H SI1 natural marquise diamonds typically cost $4,373 NZD to $11,002 NZD, with a median price of $6,203 NZD. There are currently 263 diamonds matching this specification available across retailers.

Where can I find the best price on a H SI1 marquise diamond?

About 38% 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 H SI1 Natural Marquise

Quick answer

As of November 2026, there are 263 natural marquise diamonds with H colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $4,373 NZD to $11,002 NZD, with a median of $6,203 NZD. At least 62 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 46%. Half of all listings fall between $4,829 NZD and $7,556 NZD per carat. The same specification in lab grown form lists at a median of about $1,501 NZD per carat. Over the last 30 days the median price moved +0.5% and the number of listings moved +16.6%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Marquise natural stones in the index: 2,177 USD per carat, -4.2% 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

263

Lowest Price

$3,040 NZD

Highest Price

$24,707 NZD

Average Price

$7,187 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

38.3%

Price Spread

46.3%

30-Day Price Trend

+0.5%

30-Day Supply Change

+16.6%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$3,312/ct

10th Percentile

$2,235

Median

$3,312

90th Percentile

$5,306

Score Distribution

598 diamonds scored across 4 quality tiers

Excellent

51 (8.5%)

Very Good

160 (26.8%)

Good

158 (26.4%)

Average

229 (38.3%)

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Consider Instead

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

H SI2SI2 inclusions are not visible without magnification

Save 18%

Lab-Grown H SI1Same specifications, lab-grown origin

Save 71%

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