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Round|Lab Grown|IGI

1.09ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG436073891

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436073891

Diamond specifications and retailer prices

From HK$3,836 HKD
As of November 5, 2026
Save HK$15,961 HKD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$19,797 HKD at MOH London · As of November 5, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436073891 or 436073891. Listed at 13 retailers as of November 5, 2026, with prices from HK$3,836 to HK$19,797, a HK$15,961 spread on the same certified stone. MOH London lists it at HK$19,797. 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
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073891
Dimensions6.67 × 6.64 × 4.04 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.67 mm6.64 mm1.09 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436073891
Side View
Table 56.5%Crown 33°GirdlePavilion 40.5°Culet: NoneDepth 60.7%

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 5
Current: HK$19,797 HKD|Low: HK$3,067 HKD|High: HK$20,086 HKD|Avg: HK$7,415 HKD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 10HK$3,836 HKD
Retailer 3HK$4,291 HKD
Retailer 14HK$4,291 HKD
Retailer 5HK$4,425 HKD
Retailer 11HK$4,754 HKD
Retailer 13HK$4,754 HKD
Retailer 7HK$4,864 HKD
Retailer 2HK$5,099 HKD
Retailer 9HK$5,845 HKD
Retailer 12HK$7,406 HKD
Retailer 6HK$8,120 HKD
Retailer 4HK$12,505 HKD
Retailer 8HK$12,780 HKD
MOH LondonHK$19,797 HKD

40 data points across 14 retailers

13 retailersHK$3,836 HKD to HK$19,797 HKD

A
Cheapest Retailer
-
HK$3,836 HKD
A
Retailer 2
-
HK$4,291 HKD
View
A
Retailer 3
-
HK$4,291 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$4,425 HKD
View
Retailer 5
-
HK$4,754 HKD
View
Price last confirmed 21 days ago
A
Retailer 6
-
HK$4,754 HKD
View
A
Retailer 7
-
HK$4,864 HKD
View
A
Retailer 8
-
HK$5,099 HKD
View
A
Retailer 9
-
HK$5,845 HKD
View
B+
Retailer 10
-
HK$7,406 HKD
View
B
Retailer 11
-
HK$12,505 HKD
View
B
Retailer 12
-
HK$12,780 HKD
View
Most Expensive
B
MOH London
LG436073891 · Nov 5
HK$19,797 HKD
£1,987 GBP
View
12 more retailers have this diamond
Prices start from HK$3,836 HKDSave up to HK$15,961 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 Round
HK$3,836 HKD