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Cushion|Lab Grown|IGI

1.51ct H SI1 Cushion Lab Grown Diamond

GD • H/SI1 • IGI LG526259531

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG526259531

Diamond specifications and retailer prices

From $429 CAD
$307 USD
As of October 30, 2026
Save $1,475 CAD (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,904 CAD at MOH London · As of October 25, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG526259531 or 526259531. Listed at 9 retailers as of October 25, 2026, with prices from $429 to $1,904, a $1,475 spread on the same certified stone. MOH London lists it at $1,904. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
H
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526259531
Dimensions7.33 × 7.14 × 4.32 mm
L/W Ratio1.03
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
7.33 mm7.14 mm1.51 ctH / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526259531
Side View
Table 63.5%Crown 33.9°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 60.5%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $1,904 CAD|Low: $306 CAD|High: $1,925 CAD|Avg: $956 CAD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 25, 2026
Retailer 7$429 CAD
Retailer 4$475 CAD
Retailer 9$676 CAD
Retailer 3$677 CAD
Retailer 6$785 CAD
Retailer 8$944 CAD
Retailer 10$963 CAD
Retailer 2$1,104 CAD
Retailer 5$1,355 CAD
MOH London$1,904 CAD

13 data points across 10 retailers

9 retailers$429 CAD to $1,904 CAD

B+
Cheapest Retailer
-
$429 CAD
$307 USD
Final sale: no returns
Retailer 2
-
$475 CAD
$340 USD
View
Price last confirmed 23 days ago
B+
Retailer 3
-
$676 CAD
$484 USD
View
B+
Retailer 4
-
$677 CAD
$485 USD
View
B+
Retailer 5
-
$785 CAD
$562 USD
View
B+
Retailer 6
-
$944 CAD
$676 USD
View
Retailer 7
-
$1,104 CAD
$790 USD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
$1,355 CAD
$970 USD
View
Most Expensive
B
MOH London
LG526259531 · Oct 25
$1,904 CAD
£1,073 GBP
View
8 more retailers have this diamond
Prices start from $429 CADSave up to $1,475 CAD

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
$429 CAD