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Radiant|Lab Grown|IGI

1.55ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG600355829

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

Certificate IGI LG600355829

Diamond specifications and retailer prices

From $536 CAD
$384 USD
As of October 30, 2026
Save $1,014 CAD (65%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,551 CAD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct 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 LG600355829 or 600355829. Listed at 11 retailers as of October 30, 2026, with prices from $536 to $1,551, a $1,014 spread on the same certified stone. Brilliant Earth lists it at $1,551. 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

1.55
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600355829
Dimensions8.31 × 5.68 × 3.86 mm
L/W Ratio1.46
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
8.31 mm5.68 mm1.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600355829
Side View
Table 65.0%Crown 43.6°Girdle: MediumPavilion 35.4°Culet: NoneDepth 68.0%

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: Oct 30
Current: $1,551 CAD|Low: $196 CAD|High: $1,858 CAD|Avg: $814 CAD|-16.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7$271 CAD
Retailer 6$536 CAD
Retailer 2$537 CAD
Retailer 4$568 CAD
Retailer 9$650 CAD
Retailer 8$771 CAD
Retailer 3$1,020 CAD
Retailer 5$1,410 CAD
Brilliant Earth$1,551 CAD

38 data points across 9 retailers

11 retailers$536 CAD to $1,551 CAD

Retailer 1
-
$281 CAD
$201 USD
Price last confirmed 33 days ago
Retailer 2
-
$296 CAD
$212 USD
View
Price last confirmed 33 days ago
B+
Retailer 3
-
$536 CAD
$384 USD
View
A
Retailer 4
-
$537 CAD
£303 GBP
View
A
Retailer 5
-
$568 CAD
€387 EUR
View
A
Retailer 6
-
$650 CAD
$465 USD
View
B+
Retailer 7
-
$771 CAD
$552 USD
View
B
Retailer 8
-
$1,020 CAD
$730 USD
View
B+
Retailer 9
-
$1,055 CAD
£595 GBP
View
Retailer 10
-
$1,410 CAD
£795 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
8177429A · Oct 30
$1,551 CAD
$1,110 USD
View
10 more retailers have this diamond
Prices start from $536 CADSave up to $1,014 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
1.55ct Radiant
$536 CAD