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1.23ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG729575214

Shape and cutting style on the report: Round brilliant

Certificate IGI LG729575214

Diamond specifications and retailer prices

From HK$1,255 HKD
As of November 5, 2026
Save HK$6,018 HKD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$7,273 HKD at MOH London · As of November 1, 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 LG729575214 or 729575214. Listed at 17 retailers as of November 1, 2026, with prices from HK$1,255 to HK$7,273, a HK$6,018 spread on the same certified stone. MOH London lists it at HK$7,273. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729575214
Dimensions6.88 × 6.85 × 4.24 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.88 mm6.85 mm1.23 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729575214
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.7%

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$7,273 HKD|Low: HK$1,192 HKD|High: HK$7,313 HKD|Avg: HK$3,349 HKD|+1.2%
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
Retailer 17
November 6, 2026
Retailer 4HK$1,255 HKD
Retailer 3HK$1,396 HKD
Retailer 13HK$1,451 HKD
Retailer 15HK$1,553 HKD
Retailer 16HK$1,553 HKD
Retailer 2HK$2,683 HKD
Retailer 11HK$2,714 HKD
Retailer 8HK$2,816 HKD
Retailer 14HK$2,981 HKD
Retailer 10HK$3,491 HKD
Retailer 12HK$3,656 HKD
Retailer 7HK$4,111 HKD
Retailer 9HK$4,472 HKD
Retailer 5HK$4,997 HKD
Retailer 17HK$5,280 HKD
Retailer 6HK$5,429 HKD
MOH LondonHK$7,273 HKD

46 data points across 17 retailers

17 retailersHK$1,255 HKD to HK$7,273 HKD

A
Cheapest Retailer
-
HK$1,255 HKD
A
Retailer 2
-
HK$1,396 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$1,451 HKD
View
Retailer 4
-
HK$1,553 HKD
View
Price last confirmed 12 days ago
A
Retailer 5
-
HK$1,553 HKD
View
A
Retailer 6
-
HK$2,683 HKD
View
A
Retailer 7
-
HK$2,714 HKD
View
B+
Retailer 8
-
HK$2,816 HKD
View
A
Retailer 9
-
HK$2,981 HKD
View
B+
Retailer 10
-
HK$3,491 HKD
View
B+
Retailer 11
-
HK$3,656 HKD
View
B+
Retailer 12
-
HK$4,111 HKD
View
B+
Retailer 13
-
HK$4,472 HKD
View
B
Retailer 14
-
HK$4,997 HKD
View
B
Retailer 15
-
HK$5,280 HKD
View
B
Retailer 16
-
HK$5,429 HKD
View
Most Expensive
B
MOH London
LG729575214 · Nov 1
HK$7,273 HKD
£730 GBP
View
16 more retailers have this diamond
Prices start from HK$1,255 HKDSave up to HK$6,018 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$1,255 HKD