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Radiant|Lab Grown|IGI

1.51ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG833665579

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG833665579

Diamond specifications and retailer prices

From $308 CAD
As of November 5, 2026
Save $1,153 CAD (79%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,461 CAD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant 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 LG833665579 or 833665579. Listed at 9 retailers as of November 1, 2026, with prices from $308 to $1,461, a $1,153 spread on the same certified stone. MOH London lists it at $1,461. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833665579
Dimensions8.20 × 5.51 × 3.74 mm
L/W Ratio1.49
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.20 mm5.51 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833665579
Side View
Table 63.0%Crown 43.3°Girdle: Slightly ThickPavilion 34.5°Culet: NoneDepth 67.9%

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 5
Current: $1,461 CAD|Low: $280 CAD|High: $1,559 CAD|Avg: $719 CAD|+3.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 4$280 CAD
Retailer 6$295 CAD
Retailer 5$300 CAD
Retailer 3$308 CAD
Retailer 2$397 CAD
Retailer 9$520 CAD
Retailer 14$527 CAD
Retailer 10$553 CAD
Retailer 8$626 CAD
Retailer 7$772 CAD
Retailer 12$928 CAD
Retailer 15$972 CAD
Retailer 11$1,089 CAD
Retailer 16$1,238 CAD
MOH London$1,461 CAD
Retailer 13$1,559 CAD

18 data points across 16 retailers

9 retailers$308 CAD to $1,461 CAD

Retailer 1
-
$295 CAD
Price last confirmed 39 days ago
A
Retailer 2
-
$308 CAD
View
Final sale: no returns
A
Retailer 3
-
$397 CAD
View
A
Retailer 4
-
$520 CAD
View
B+
Retailer 5
-
$553 CAD
View
Retailer 6
-
$972 CAD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$1,089 CAD
View
Retailer 8
-
$1,238 CAD
View
Price last confirmed 38 days ago
Most Expensive
B
MOH London
LG833665579 · Nov 1
$1,461 CAD
£818 GBP
View
8 more retailers have this diamond
Prices start from $308 CADSave up to $1,153 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.

A
1.51ct Radiant
$308 CAD