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1.26ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG451057956

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057956

Diamond specifications and retailer prices

From HK$4,699 HKD
As of November 5, 2026
Save HK$20,588 HKD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$25,287 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 1.26ct lab-grown round diamond

This 1.26ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057956 or 451057956. Listed at 11 retailers as of November 1, 2026, with prices from HK$4,699 to HK$25,287, a HK$20,588 spread on the same certified stone. MOH London lists it at HK$25,287. 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

1.26
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057956
Dimensions7.16 × 7.05 × 4.17 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) process Type IIa
Top View
7.16 mm7.05 mm1.26 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057956
Side View
Table 57.0%Crown 31.5°Girdle: MediumPavilion 40.3°Culet: NoneDepth 59.1%

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$25,287 HKD|Low: HK$4,511 HKD|High: HK$25,586 HKD|Avg: HK$9,977 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6HK$4,699 HKD
Retailer 9HK$5,248 HKD
Retailer 2HK$5,649 HKD
Retailer 7HK$5,821 HKD
Retailer 10HK$5,821 HKD
Retailer 4HK$6,825 HKD
Retailer 8HK$8,936 HKD
Retailer 11HK$9,249 HKD
Retailer 5HK$14,451 HKD
Retailer 3HK$15,588 HKD
MOH LondonHK$25,287 HKD

19 data points across 11 retailers

11 retailersHK$4,699 HKD to HK$25,287 HKD

A
Cheapest Retailer
-
HK$4,699 HKD
B+
Retailer 2
-
HK$5,248 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$5,256 HKD
View
B+
Retailer 4
-
HK$5,649 HKD
View
Retailer 5
-
HK$5,821 HKD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
HK$5,821 HKD
View
B+
Retailer 7
-
HK$6,825 HKD
View
B
Retailer 8
-
HK$8,936 HKD
View
B
Retailer 9
-
HK$14,451 HKD
View
B
Retailer 10
-
HK$15,314 HKD
View
Most Expensive
B
MOH London
LG451057956 · Nov 1
HK$25,287 HKD
£2,538 GBP
View
10 more retailers have this diamond
Prices start from HK$4,699 HKDSave up to HK$20,588 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
1.26ct Round
HK$4,699 HKD