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1.31ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG407930537

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407930537

Diamond specifications and retailer prices

From HK$4,566 HKD
As of November 5, 2026
Save HK$19,944 HKD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$24,510 HKD at MOH London · As of November 5, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407930537 or 407930537. Listed at 10 retailers as of November 5, 2026, with prices from HK$4,566 to HK$24,510, a HK$19,944 spread on the same certified stone. MOH London lists it at HK$24,510. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407930537
Dimensions7.08 × 7.05 × 4.31 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.08 mm7.05 mm1.31 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG407930537
Side View
Table 55.5%Crown 36°Girdle: MediumPavilion 40.2°Culet: NoneDepth 61.0%

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$24,510 HKD|Low: HK$4,385 HKD|High: HK$24,879 HKD|Avg: HK$10,027 HKD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 5HK$4,566 HKD
Retailer 10HK$5,107 HKD
Retailer 8HK$5,115 HKD
Retailer 6HK$5,664 HKD
Retailer 2HK$5,805 HKD
Retailer 7HK$8,716 HKD
Retailer 11HK$9,069 HKD
Retailer 3HK$11,838 HKD
Retailer 4HK$14,051 HKD
Retailer 9HK$14,890 HKD
MOH LondonHK$24,510 HKD

15 data points across 11 retailers

10 retailersHK$4,566 HKD to HK$24,510 HKD

A
Cheapest Retailer
-
HK$4,566 HKD
A
Retailer 2
-
HK$5,107 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$5,115 HKD
View
B+
Retailer 4
-
HK$5,664 HKD
View
Retailer 5
-
HK$5,664 HKD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
HK$5,805 HKD
View
B
Retailer 7
-
HK$8,716 HKD
View
B
Retailer 8
-
HK$14,051 HKD
View
B
Retailer 9
-
HK$14,890 HKD
View
Most Expensive
B
MOH London
LG407930537 · Nov 5
HK$24,510 HKD
£2,460 GBP
View
9 more retailers have this diamond
Prices start from HK$4,566 HKDSave up to HK$19,944 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$4,566 HKD