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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 €443 EUR
$495 USD
As of November 1, 2026
Save €715 EUR (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €1,158 EUR 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 €443 to €1,158, a €715 spread on the same certified stone. MOH London lists it at €1,158. 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
Color
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: €1,158 EUR|Low: €207 EUR|High: €1,165 EUR|Avg: €648 EUR|+8.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4€262 EUR
Retailer 5€443 EUR
Retailer 2€548 EUR
Retailer 3€554 EUR
Retailer 6€725 EUR
Retailer 7€919 EUR
MOH London€1,158 EUR

36 data points across 7 retailers

7 retailers€443 EUR to €1,158 EUR

Retailer 1
-
€262 EUR
$293 USD
Price last confirmed 7 days ago
B+
Retailer 2
-
€443 EUR
$495 USD
View
B+
Retailer 3
-
€548 EUR
£482 GBP
View
B+
Retailer 4
-
€554 EUR
$619 USD
View
B+
Retailer 5
-
€725 EUR
$810 USD
View
B
Retailer 6
-
€919 EUR
$1,027 USD
View
Most Expensive
B
MOH London
LG520200135 · Nov 1
€1,158 EUR
£1,019 GBP
View
6 more retailers have this diamond
Prices start from €443 EURSave up to €715 EUR

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
€443 EUR