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Cushion|Lab Grown|IGI

1.51ct G SI2 Cushion Lab Grown Diamond

ID • G/SI2 • IGI LG520200135

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

Certificate IGI LG520200135

Diamond specifications and retailer prices

From HK$3,884 HKD
$495 USD
As of November 1, 2026
Save HK$6,270 HKD (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$10,154 HKD at MOH London · As of November 1, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG520200135 or 520200135. Listed at 7 retailers as of November 1, 2026, with prices from HK$3,884 to HK$10,154, a HK$6,270 spread on the same certified stone. MOH London lists it at HK$10,154. 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
G
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG520200135
Dimensions6.58 × 6.48 × 4.52 mm
L/W Ratio1.02
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
6.58 mm6.48 mm1.51 ctG / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG520200135
Side View
Table 62.0%Crown 40.2°Girdle: STK-VTKPavilion 40°Culet: NoneDepth 69.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$10,154 HKD|Low: HK$1,812 HKD|High: HK$10,214 HKD|Avg: HK$5,691 HKD|+8.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4HK$2,299 HKD
Retailer 5HK$3,884 HKD
Retailer 2HK$4,846 HKD
Retailer 3HK$4,857 HKD
Retailer 6HK$6,353 HKD
Retailer 7HK$8,058 HKD
MOH LondonHK$10,154 HKD

36 data points across 7 retailers

7 retailersHK$3,884 HKD to HK$10,154 HKD

Retailer 1
-
HK$2,299 HKD
$293 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
HK$3,884 HKD
$495 USD
View
B+
Retailer 3
-
HK$4,846 HKD
£486 GBP
View
B+
Retailer 4
-
HK$4,857 HKD
$619 USD
View
B+
Retailer 5
-
HK$6,353 HKD
$810 USD
View
B
Retailer 6
-
HK$8,058 HKD
$1,027 USD
View
Most Expensive
B
MOH London
LG520200135 · Nov 1
HK$10,154 HKD
£1,019 GBP
View
6 more retailers have this diamond
Prices start from HK$3,884 HKDSave up to HK$6,270 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.

B+
1.51ct Cushion
HK$3,884 HKD