How much does a 1.50 to 1.99ct L SI2 natural cushion diamond cost?

As of November 6, 2026, 1.50 to 1.99ct L SI2 natural cushion diamonds typically cost $3,104 NZD to $9,157 NZD, with a median price of $4,826 NZD. There are currently 115 diamonds matching this specification available across retailers.

Where can I find the best price on a L SI2 cushion diamond?

About 48% of these diamonds are available at multiple retailers, with an average price spread of 67%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct L SI2 Natural Cushion

Quick answer

As of November 6, 2026, there are 115 natural cushion diamonds with L colour and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $3,104 NZD to $9,157 NZD, with a median of $4,826 NZD. Half of all listings fall between $2,330 NZD and $4,260 NZD per carat. Over the last 30 days the median price moved -0.8% and the number of listings moved +4.0%.

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. Cushion natural stones in the index: 2,881 USD per carat, -2.5% 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

115

Lowest Price

$2,471 NZD

Highest Price

$16,231 NZD

Average Price

$5,589 NZD

Market Intelligence

Cross Retailer %

47.8%

Price Spread

67.4%

30-Day Price Trend

-0.8%

30-Day Supply Change

+4.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,587/ct

10th Percentile

$1,101

Median

$1,587

90th Percentile

$3,264

Score Distribution

115 diamonds scored across 4 quality tiers

Excellent

17 (14.8%)

Very Good

28 (24.3%)

Good

31 (27.0%)

Average

39 (33.9%)

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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