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1.23ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG691548634

Shape and cutting style on the report: Round brilliant

Certificate IGI LG691548634

Diamond specifications and retailer prices

From HK$2,322 HKD
As of November 5, 2026
Save HK$5,858 HKD (72%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$8,180 HKD at MOH London · As of November 5, 2026
View at MOH London

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round 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 LG691548634 or 691548634. Listed at 6 retailers as of November 5, 2026, with prices from HK$2,322 to HK$8,180, a HK$5,858 spread on the same certified stone. MOH London lists it at HK$8,180. 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

1.23
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691548634
Dimensions6.86 × 6.81 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.86 mm6.81 mm1.23 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691548634
Side View
Table 59.0%Crown 34.4°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.2%

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$8,180 HKD|Low: HK$2,322 HKD|High: HK$8,300 HKD|Avg: HK$3,830 HKD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6HK$2,322 HKD
Retailer 4HK$2,871 HKD
Retailer 2HK$3,115 HKD
Retailer 3HK$3,491 HKD
Retailer 5HK$3,554 HKD
MOH LondonHK$8,180 HKD

42 data points across 6 retailers

6 retailersHK$2,322 HKD to HK$8,180 HKD

A
Cheapest Retailer
-
HK$2,322 HKD
B+
Retailer 2
-
HK$2,871 HKD
View
B+
Retailer 3
-
HK$3,115 HKD
View
B+
Retailer 4
-
HK$3,491 HKD
View
B+
Retailer 5
-
HK$3,554 HKD
View
Most Expensive
B
MOH London
LG691548634 · Nov 5
HK$8,180 HKD
£821 GBP
View
5 more retailers have this diamond
Prices start from HK$2,322 HKDSave up to HK$5,858 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
1.23ct Round
HK$2,322 HKD