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1.28ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG792617959

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792617959

Diamond specifications and retailer prices

From HK$2,597 HKD
As of November 5, 2026
Save HK$7,137 HKD (73%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$9,734 HKD at MOH London · As of November 5, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG792617959 or 792617959. Listed at 8 retailers as of November 5, 2026, with prices from HK$2,597 to HK$9,734, a HK$7,137 spread on the same certified stone. MOH London lists it at HK$9,734. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792617959
Dimensions6.97 × 7.00 × 4.26 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
6.97 mm7.00 mm1.28 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792617959
Side View
Table 60.0%Crown 34.8°Girdle: MediumPavilion 41°Culet: NoneDepth 60.9%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: HK$9,734 HKD|Low: HK$2,495 HKD|High: HK$9,804 HKD|Avg: HK$5,190 HKD|+14.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 3HK$2,597 HKD
Retailer 4HK$3,609 HKD
Retailer 7HK$3,742 HKD
Retailer 2HK$4,574 HKD
Retailer 5HK$4,707 HKD
Retailer 8HK$6,504 HKD
Retailer 6HK$9,163 HKD
MOH LondonHK$9,734 HKD

32 data points across 8 retailers

8 retailersHK$2,597 HKD to HK$9,734 HKD

A
Cheapest Retailer
-
HK$2,597 HKD
B+
Retailer 2
-
HK$3,609 HKD
View
B+
Retailer 3
-
HK$3,742 HKD
View
B
Retailer 4
-
HK$4,574 HKD
View
B
Retailer 5
-
HK$4,707 HKD
View
B
Retailer 6
-
HK$6,504 HKD
View
B
Retailer 7
-
HK$9,163 HKD
View
Most Expensive
B
MOH London
LG792617959 · Nov 5
HK$9,734 HKD
£977 GBP
View
7 more retailers have this diamond
Prices start from HK$2,597 HKDSave up to HK$7,137 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$2,597 HKD