CaratHunter
Plans
Round|Lab Grown|IGI

1.31ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG499105136

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499105136

Diamond specifications and retailer prices

From HK$6,731 HKD
As of November 5, 2026
Save HK$22,472 HKD (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$29,203 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499105136 or 499105136. Listed at 11 retailers as of November 5, 2026, with prices from HK$6,731 to HK$29,203, a HK$22,472 spread on the same certified stone. MOH London lists it at HK$29,203. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499105136
Dimensions6.95 × 6.99 × 4.36 mm
L/W Ratio1.01
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
6.95 mm6.99 mm1.31 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499105136
Side View
Table 56.5%Crown 34.2°Girdle: MediumPavilion 41.1°Culet: NoneDepth 62.5%

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$29,203 HKD|Low: HK$6,731 HKD|High: HK$29,631 HKD|Avg: HK$12,813 HKD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3HK$6,731 HKD
Retailer 7HK$7,531 HKD
Retailer 4HK$7,688 HKD
Retailer 5HK$7,814 HKD
Retailer 8HK$9,179 HKD
Retailer 9HK$11,972 HKD
Retailer 6HK$12,568 HKD
Retailer 2HK$17,958 HKD
MOH LondonHK$29,203 HKD

12 data points across 9 retailers

11 retailersHK$6,731 HKD to HK$29,203 HKD

A
Cheapest Retailer
-
HK$6,731 HKD
B+
Retailer 2
-
HK$7,327 HKD
View
B+
Retailer 3
-
HK$7,531 HKD
View
Final sale: no returns
B+
Retailer 4
-
HK$7,688 HKD
View
Retailer 5
-
HK$7,814 HKD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
HK$7,814 HKD
View
B+
Retailer 7
-
HK$9,179 HKD
View
B
Retailer 8
-
HK$12,568 HKD
View
B
Retailer 9
-
HK$17,958 HKD
View
B
Retailer 10
-
HK$21,959 HKD
View
Most Expensive
B
MOH London
LG499105136 · Nov 5
HK$29,203 HKD
£2,931 GBP
View
10 more retailers have this diamond
Prices start from HK$6,731 HKDSave up to HK$22,472 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$6,731 HKD