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

As of November 6, 2026, 1.50 to 1.99ct L SI1 natural oval diamonds typically cost HK$14,566 HKD to HK$37,244 HKD, with a median price of HK$20,863 HKD. There are currently 203 diamonds matching this specification available across retailers.

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

About 67% of these diamonds are available at multiple retailers, with an average price spread of 47%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct L SI1 Natural Oval

Quick answer

As of November 6, 2026, there are 203 natural oval diamonds with L colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$14,566 HKD to HK$37,244 HKD, with a median of HK$20,863 HKD. Half of all listings fall between HK$11,187 HKD and HK$17,512 HKD per carat. The same specification in lab grown form lists at a median of about HK$11,525 HKD per carat. Over the last 30 days the median price moved -1.3% and the number of listings moved +31.0%.

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. Oval natural stones in the index: 2,512 USD per carat, -7.2% 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

203

Lowest Price

HK$11,135 HKD

Highest Price

HK$79,252 HKD

Average Price

HK$23,704 HKD

Market Intelligence

Cross Retailer %

67.5%

Price Spread

47.5%

30-Day Price Trend

-1.3%

30-Day Supply Change

+31.0%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,701/ct

10th Percentile

$1,209

Median

$1,701

90th Percentile

$2,799

Score Distribution

203 diamonds scored across 4 quality tiers

Excellent

32 (15.8%)

Very Good

76 (37.4%)

Good

58 (28.6%)

Average

37 (18.2%)

Find Your Diamond

Search 203 L SI1 oval diamonds and compare prices.

Search Diamonds

Consider Instead

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

M SI1

Save 10%

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