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Round|Lab Grown|IGI

1.31ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG436072947

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436072947

Diamond specifications and retailer prices

From HK$4,872 HKD
As of November 5, 2026
Save HK$18,941 HKD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$23,813 HKD at MOH London · As of November 3, 2026
View at MOH London

About this 1.31ct lab-grown round diamond

This 1.31ct 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 LG436072947 or 436072947. Listed at 12 retailers as of November 3, 2026, with prices from HK$4,872 to HK$23,813, a HK$18,941 spread on the same certified stone. MOH London lists it at HK$23,813. 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

1.31
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436072947
Dimensions7.13 × 7.10 × 4.22 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.13 mm7.10 mm1.31 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436072947
Side View
Table 59.5%Crown 34.3°GirdlePavilion 40.2°Culet: NoneDepth 59.4%

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$23,813 HKD|Low: HK$3,899 HKD|High: HK$24,101 HKD|Avg: HK$9,209 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$4,872 HKD
Retailer 9HK$5,460 HKD
Retailer 2HK$5,884 HKD
Retailer 7HK$6,041 HKD
Retailer 10HK$6,041 HKD
Retailer 11HK$6,111 HKD
Retailer 5HK$7,061 HKD
Retailer 8HK$9,249 HKD
Retailer 3HK$9,532 HKD
Retailer 4HK$15,000 HKD
MOH LondonHK$23,813 HKD

17 data points across 11 retailers

12 retailersHK$4,872 HKD to HK$23,813 HKD

A
Cheapest Retailer
-
HK$4,872 HKD
B+
Retailer 2
-
HK$5,460 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$5,460 HKD
View
B+
Retailer 4
-
HK$5,884 HKD
View
B+
Retailer 5
-
HK$6,041 HKD
View
Retailer 6
-
HK$6,041 HKD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
HK$6,111 HKD
View
B+
Retailer 8
-
HK$7,061 HKD
View
B
Retailer 9
-
HK$9,249 HKD
View
B
Retailer 10
-
HK$15,000 HKD
View
B
Retailer 11
-
HK$15,894 HKD
View
Most Expensive
B
MOH London
LG436072947 · Nov 3
HK$23,813 HKD
£2,390 GBP
View
11 more retailers have this diamond
Prices start from HK$4,872 HKDSave up to HK$18,941 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
1.31ct Round
HK$4,872 HKD