How much does a 1.50 to 1.99ct F SI1 lab grown round diamond cost?

As of October 2026, 1.50 to 1.99ct F SI1 lab grown round diamonds typically cost HK$1,703 HKD to HK$9,651 HKD, with a median price of HK$5,877 HKD. There are currently 252 diamonds matching this specification available across retailers.

Where can I find the best price on a F SI1 round diamond?

About 29% of these diamonds are available at multiple retailers, with an average price spread of 74%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct F SI1 Lab Grown Round

Quick answer

As of October 2026, there are 252 lab grown round diamonds with F colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$1,703 HKD to HK$9,651 HKD, with a median of HK$5,877 HKD. At least 39 retailers stock this exact specification, and 29% of the stones appear at more than one of them, with an average price spread of 74%. Half of all listings fall between HK$1,961 HKD and HK$4,161 HKD per carat. The same specification in natural form lists at a median of about HK$47,924 HKD per carat. Over the last 30 days the median price moved +6.5% and the number of listings moved +12.0%.

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. Round lab grown stones in the index: 414 USD per carat, -5.0% 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

252

Lowest Price

HK$1,381 HKD

Highest Price

HK$22,762 HKD

Average Price

HK$5,821 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

28.8%

Price Spread

73.8%

30-Day Price Trend

+6.5%

30-Day Supply Change

+12.0%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$380/ct

10th Percentile

$151

Median

$380

90th Percentile

$772

Score Distribution

760 diamonds scored across 4 quality tiers

Excellent

172 (22.6%)

Very Good

80 (10.5%)

Good

158 (20.8%)

Average

350 (46.1%)

Find Your Diamond

Search 252 F SI1 round diamonds and compare prices.

Search Diamonds

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