How much does a 1.50 to 1.99ct L SI1 natural radiant diamond cost?

As of November 7, 2026, 1.50 to 1.99ct L SI1 natural radiant diamonds typically cost HK$15,730 HKD to HK$35,480 HKD, with a median price of HK$22,023 HKD. There are currently 69 diamonds matching this specification available across retailers.

Where can I find the best price on a L SI1 radiant diamond?

About 64% of these diamonds are available at multiple retailers, with an average price spread of 34%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct L SI1 Natural Radiant

Quick answer

As of November 7, 2026, there are 69 natural radiant diamonds with L colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$15,730 HKD to HK$35,480 HKD, with a median of HK$22,023 HKD. Half of all listings fall between HK$11,507 HKD and HK$16,298 HKD per carat. Over the last 30 days the median price moved -3.4% and the number of listings moved +46.0%.

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. Radiant natural stones in the index: 3,108 USD per carat, +0.3% 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 7, 2026

Available

Lowest Price

HK$13,142 HKD

Highest Price

HK$53,757 HKD

Average Price

HK$23,158 HKD

Market Intelligence

Cross Retailer %

63.8%

Price Spread

34.4%

30-Day Price Trend

-3.4%

30-Day Supply Change

+46.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,776/ct

10th Percentile

$1,338

Median

$1,776

90th Percentile

$2,729

Score Distribution

69 diamonds scored across 4 quality tiers

Excellent

9 (13.0%)

Very Good

29 (42.0%)

Good

10 (14.5%)

Average

21 (30.4%)

Find Your Diamond

Search 69 L SI1 radiant diamonds and compare prices.

Search Diamonds

Consider Instead

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

L SI2

Save 14%

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