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Radiant|Lab Grown|IGI

1.55ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG641483559

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

Certificate IGI LG641483559

Diamond specifications and retailer prices

From $254 CAD
$182 USD
As of October 30, 2026
Save $1,331 CAD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,585 CAD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

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 LG641483559 or 641483559. Listed at 19 retailers as of October 30, 2026, with prices from $254 to $1,585, a $1,331 spread on the same certified stone. Reve Diamonds lists it at $1,585. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG641483559
Dimensions8.24 × 5.68 × 3.73 mm
L/W Ratio1.45
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
8.24 mm5.68 mm1.55 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG641483559
Side View
Table 63.0%Crown 43°Girdle: MED-STKPavilion 35.1°Culet: NoneDepth 65.7%

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: $1,411 CAD|Low: $237 CAD|High: $1,606 CAD|Avg: $681 CAD|-12.2%
Retailer 1
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
Reve Diamonds
October 30, 2026
Retailer 8$254 CAD
Retailer 6$307 CAD
Retailer 13$314 CAD
Retailer 7$324 CAD
Retailer 10$404 CAD
Retailer 2$516 CAD
Retailer 9$555 CAD
Retailer 11$567 CAD
Retailer 4$786 CAD
Retailer 5$986 CAD
Retailer 12$1,086 CAD
Retailer 3$1,208 CAD
Retailer 1$1,411 CAD
Retailer 14$1,442 CAD
Reve Diamonds$1,585 CAD

36 data points across 15 retailers

19 retailers$254 CAD to $1,585 CAD

A
Cheapest Retailer
-
$254 CAD
$182 USD
A
Retailer 2
-
$286 CAD
$205 USD
View
A
Retailer 3
-
$307 CAD
$220 USD
View
A
Retailer 4
-
$314 CAD
$225 USD
View
A
Retailer 5
-
$324 CAD
$232 USD
View
Final sale: no returns
A
Retailer 6
-
$404 CAD
£228 GBP
View
Retailer 7
-
$516 CAD
€352 EUR
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$555 CAD
$397 USD
View
A
Retailer 9
-
$567 CAD
£320 GBP
View
A
Retailer 10
-
$651 CAD
$466 USD
View
B+
Retailer 11
-
$777 CAD
$556 USD
View
B+
Retailer 12
-
$786 CAD
$563 USD
View
B
Retailer 13
-
$986 CAD
$706 USD
View
B+
Retailer 14
-
$1,086 CAD
$778 USD
View
B+
Retailer 15
-
$1,102 CAD
£621 GBP
View
Retailer 16
-
$1,208 CAD
$865 USD
View
Price last confirmed 11 days ago
B
Retailer 17
-
$1,411 CAD
$1,010 USD
View
B
Retailer 18
-
$1,442 CAD
£813 GBP
View
Most Expensive
B
Reve Diamonds
27F484ECB · Oct 30
$1,585 CAD
$1,135 USD
View
18 more retailers have this diamond
Prices start from $254 CADSave up to $1,331 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
$254 CAD