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Round|Lab Grown|IGI

1.28ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG818686822

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686822

Diamond specifications and retailer prices

From HK$1,342 HKD
As of November 5, 2026
Save HK$6,440 HKD (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$7,781 HKD at MOH London · As of November 2, 2026
View at MOH London

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818686822 or 818686822. Listed at 16 retailers as of November 2, 2026, with prices from HK$1,342 to HK$7,781, a HK$6,440 spread on the same certified stone. MOH London lists it at HK$7,781. 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

1.28
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686822
Dimensions6.99 × 7.00 × 4.28 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.99 mm7.00 mm1.28 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686822
Side View
Table 58.0%Crown 34.4°Girdle: MediumPavilion 41°Culet: NoneDepth 61.2%

Caratlytics Score

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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$7,781 HKD|Low: HK$1,287 HKD|High: HK$7,871 HKD|Avg: HK$3,651 HKD|-1.1%
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 14HK$1,342 HKD
Retailer 15HK$1,553 HKD
Retailer 3HK$1,663 HKD
Retailer 4HK$1,663 HKD
Retailer 2HK$2,856 HKD
Retailer 11HK$2,926 HKD
Retailer 16HK$2,973 HKD
Retailer 12HK$3,334 HKD
Retailer 7HK$3,570 HKD
Retailer 6HK$3,640 HKD
Retailer 9HK$3,679 HKD
Retailer 13HK$4,229 HKD
Retailer 10HK$5,021 HKD
Retailer 5HK$5,350 HKD
Retailer 8HK$5,774 HKD
MOH LondonHK$7,781 HKD

34 data points across 16 retailers

16 retailersHK$1,342 HKD to HK$7,781 HKD

A
Cheapest Retailer
-
HK$1,342 HKD
A
Retailer 2
-
HK$1,553 HKD
View
Retailer 3
-
HK$1,663 HKD
View
Price last confirmed 12 days ago
A
Retailer 4
-
HK$1,663 HKD
View
A
Retailer 5
-
HK$2,856 HKD
View
A
Retailer 6
-
HK$2,926 HKD
View
B+
Retailer 7
-
HK$2,973 HKD
View
A
Retailer 8
-
HK$3,334 HKD
View
B+
Retailer 9
-
HK$3,570 HKD
View
B+
Retailer 10
-
HK$3,640 HKD
View
A
Retailer 11
-
HK$3,679 HKD
View
B+
Retailer 12
-
HK$4,229 HKD
View
B
Retailer 13
-
HK$5,021 HKD
View
B
Retailer 14
-
HK$5,350 HKD
View
B+
Retailer 15
-
HK$5,774 HKD
View
Most Expensive
B
MOH London
LG818686822 · Nov 2
HK$7,781 HKD
£781 GBP
View
15 more retailers have this diamond
Prices start from HK$1,342 HKDSave up to HK$6,440 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
1.28ct Round
HK$1,342 HKD