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Heart|Lab Grown|IGI

1.09ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG839643040

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG839643040

Diamond specifications and retailer prices

From HK$1,340 HKD
As of November 6, 2026
Save HK$3,441 HKD (72%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$4,781 HKD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.09ct lab-grown heart diamond

This 1.09ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG839643040 or 839643040. Listed at 3 retailers as of November 6, 2026, with prices from HK$1,340 to HK$4,781, a HK$3,441 spread on the same certified stone. Brilliant Earth lists it at HK$4,781. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839643040
Dimensions6.17 × 7.09 × 4.33 mm
L/W Ratio1.15
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.17 mm7.09 mm1.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839643040
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$4,781 HKD|Low: HK$1,340 HKD|High: HK$7,759 HKD|Avg: HK$4,289 HKD|-38.4%
Brilliant Earth
Retailer 2
Retailer 3
November 6, 2026
Retailer 3HK$1,340 HKD
Retailer 2HK$2,680 HKD
Brilliant EarthHK$4,781 HKD

38 data points across 3 retailers

3 retailersHK$1,340 HKD to HK$4,781 HKD

A
Cheapest Retailer
-
HK$1,340 HKD
Final sale: no returns
B+
Retailer 2
-
HK$2,680 HKD
View
Most Expensive
B
Brilliant Earth
21542387A · Nov 6
HK$4,781 HKD
$610 USD
View
2 more retailers have this diamond
Prices start from HK$1,340 HKDSave up to HK$3,441 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.09ct Heart
HK$1,340 HKD