How much does a 1.00 to 1.49ct E SI2 lab grown radiant diamond cost?

As of October 2026, 1.00 to 1.49ct E SI2 lab grown radiant diamonds typically cost HK$1,450 HKD to HK$7,716 HKD, with a median price of HK$3,608 HKD. There are currently 9 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI2 radiant diamond?

About 42% of these diamonds are available at multiple retailers, with an average price spread of 83%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct E SI2 Lab Grown Radiant

Quick answer

As of October 2026, there are 9 lab grown radiant diamonds with E colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run HK$1,450 HKD to HK$7,716 HKD, with a median of HK$3,608 HKD. At least 22 retailers stock this exact specification, and 42% of the stones appear at more than one of them, with an average price spread of 83%. Half of all listings fall between HK$2,760 HKD and HK$6,668 HKD per carat. The same specification in natural form lists at a median of about HK$26,194 HKD per carat. Over the last 30 days the median price moved +4.0% and the number of listings moved +30.2%.

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. Radiant lab grown stones in the index: 474 USD per carat, -2.1% 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$1,153 HKD

Highest Price

HK$14,294 HKD

Average Price

HK$4,211 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

41.7%

Price Spread

82.8%

30-Day Price Trend

+4.0%

30-Day Supply Change

+30.2%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$601/ct

10th Percentile

$242

Median

$601

90th Percentile

$1,130

Score Distribution

15 diamonds scored across 4 quality tiers

Excellent

3 (20.0%)

Very Good

4 (26.7%)

Good

4 (26.7%)

Average

4 (26.7%)

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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