How much does a 1.00 to 1.49ct J SI2 natural marquise diamond cost?

As of November 6, 2026, 1.00 to 1.49ct J SI2 natural marquise diamonds typically cost $2,309 NZD to $8,226 NZD, with a median price of $4,194 NZD. There are currently 769 diamonds matching this specification available across retailers.

Where can I find the best price on a J SI2 marquise diamond?

About 38% of these diamonds are available at multiple retailers, with an average price spread of 54%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J SI2 Natural Marquise

Quick answer

As of November 6, 2026, there are 769 natural marquise diamonds with J colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,309 NZD to $8,226 NZD, with a median of $4,194 NZD. Half of all listings fall between $2,956 NZD and $5,091 NZD per carat. The same specification in lab grown form lists at a median of about $2,254 NZD per carat. Over the last 30 days the median price moved +0.6% and the number of listings moved +14.5%.

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 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

769

Lowest Price

$1,362 NZD

Highest Price

$19,047 NZD

Average Price

$4,794 NZD

Market Intelligence

Cross Retailer %

38.2%

Price Spread

53.7%

30-Day Price Trend

+0.6%

30-Day Supply Change

+14.5%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$2,204/ct

10th Percentile

$1,191

Median

$2,204

90th Percentile

$3,914

Score Distribution

769 diamonds scored across 4 quality tiers

Excellent

105 (13.7%)

Very Good

213 (27.7%)

Good

170 (22.1%)

Average

281 (36.5%)

Find Your Diamond

Search 769 J SI2 marquise diamonds and compare prices.

Search Diamonds

Consider Instead

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

K SI2

Save 17%

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