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Cushion|Lab Grown|IGI

1.51ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG771601186

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG771601186

Diamond specifications and retailer prices

From HK$1,904 HKD
As of November 6, 2026
Save HK$6,018 HKD (76%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$7,923 HKD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG771601186 or 771601186. Listed at 9 retailers as of November 5, 2026, with prices from HK$1,904 to HK$7,923, a HK$6,018 spread on the same certified stone. MOH London lists it at HK$7,923. 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

1.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771601186
Dimensions6.73 × 6.69 × 4.33 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.73 mm6.69 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771601186
Side View
Table 64.0%Crown 32.6°Girdle: MED-STKPavilion 39°Culet: NoneDepth 64.7%

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 6
Current: HK$7,923 HKD|Low: HK$1,904 HKD|High: HK$7,943 HKD|Avg: HK$3,781 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 6, 2026
Retailer 8HK$1,904 HKD
Retailer 4HK$2,155 HKD
Retailer 2HK$2,931 HKD
Retailer 5HK$3,002 HKD
Retailer 9HK$3,025 HKD
Retailer 10HK$3,064 HKD
Retailer 7HK$3,495 HKD
Retailer 3HK$3,864 HKD
Retailer 6HK$5,800 HKD
Retailer 11HK$6,975 HKD
MOH LondonHK$7,923 HKD

10 data points across 11 retailers

9 retailersHK$1,904 HKD to HK$7,923 HKD

A
Cheapest Retailer
-
HK$1,904 HKD
A
Retailer 2
-
HK$2,155 HKD
View
A
Retailer 3
-
HK$2,931 HKD
View
A
Retailer 4
-
HK$3,002 HKD
View
B+
Retailer 5
-
HK$3,025 HKD
View
Retailer 6
-
HK$3,064 HKD
View
Price last confirmed 7 days ago
A
Retailer 7
-
HK$3,495 HKD
View
B+
Retailer 8
-
HK$5,800 HKD
View
Most Expensive
B
MOH London
LG771601186 · Nov 5
HK$7,923 HKD
£796 GBP
View
8 more retailers have this diamond
Prices start from HK$1,904 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
1.51ct Cushion
HK$1,904 HKD