How much does a 1.50 to 1.99ct G SI2 lab grown round diamond cost?

As of October 2026, 1.50 to 1.99ct G SI2 lab grown round diamonds typically cost HK$2,404 HKD to HK$15,211 HKD, with a median price of HK$5,073 HKD. There are currently 33 diamonds matching this specification available across retailers.

Where can I find the best price on a G SI2 round diamond?

About 38% of these diamonds are available at multiple retailers, with an average price spread of 120%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct G SI2 Lab Grown Round

Quick answer

As of October 2026, there are 33 lab grown round diamonds with G colour and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$2,404 HKD to HK$15,211 HKD, with a median of HK$5,073 HKD. At least 35 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 120%. Half of all listings fall between HK$1,756 HKD and HK$5,862 HKD per carat. The same specification in natural form lists at a median of about HK$32,185 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

Lowest Price

HK$1,397 HKD

Highest Price

HK$18,205 HKD

Average Price

HK$6,969 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

37.7%

Price Spread

120.4%

30-Day Price Trend

+6.5%

30-Day Supply Change

+12.0%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$435/ct

10th Percentile

$161

Median

$435

90th Percentile

$962

Score Distribution

66 diamonds scored across 4 quality tiers

Excellent

18 (27.3%)

Very Good

7 (10.6%)

Good

12 (18.2%)

Average

29 (43.9%)

Find Your Diamond

Search 33 G SI2 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