How much does a 0.50 to 0.74ct D SI2 natural cushion diamond cost?

As of October 2026, 0.50 to 0.74ct D SI2 natural cushion diamonds typically cost HK$3,726 HKD to HK$11,537 HKD, with a median price of HK$6,140 HKD. There are currently 105 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 81%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct D SI2 Natural Cushion

Quick answer

As of October 2026, there are 105 natural cushion diamonds with D colour and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run HK$3,726 HKD to HK$11,537 HKD, with a median of HK$6,140 HKD. At least 46 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 81%. Half of all listings fall between HK$7,663 HKD and HK$15,763 HKD per carat. The same specification in lab grown form lists at a median of about HK$5,789 HKD per carat. Over the last 30 days the median price moved -3.0% and the number of listings moved +4.9%.

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. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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

105

Lowest Price

HK$2,801 HKD

Highest Price

HK$25,516 HKD

Average Price

HK$7,009 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

30.6%

Price Spread

80.6%

30-Day Price Trend

-3.0%

30-Day Supply Change

+4.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,281/ct

10th Percentile

$786

Median

$1,281

90th Percentile

$2,577

Score Distribution

302 diamonds scored across 4 quality tiers

Excellent

40 (13.2%)

Very Good

77 (25.5%)

Good

79 (26.2%)

Average

106 (35.1%)

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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