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Radiant|Lab Grown|IGI

5.45ct F SI2 Radiant Lab Grown Diamond

ID • F/SI2 • IGI LG551274539

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

Certificate IGI LG551274539

Diamond specifications and retailer prices

From $895 CAD
$641 USD
As of October 30, 2026
Save $5,055 CAD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,951 CAD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 5.45ct lab-grown radiant diamond

This 5.45ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG551274539 or 551274539. Listed at 14 retailers as of October 28, 2026, with prices from $895 to $5,951, a $5,055 spread on the same certified stone. Rare Carat lists it at $5,951. 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

5.45
Carat
F
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.2°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551274539
Dimensions12.58 × 8.53 × 5.70 mm
L/W Ratio1.47
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
12.58 mm8.53 mm5.45 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551274539
Side View
Table 65.5%Crown 46.2°Girdle: ThickPavilion 34.2°Culet: NoneDepth 66.8%

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: $5,951 CAD|Low: $895 CAD|High: $9,960 CAD|Avg: $3,390 CAD|-11.2%
Rare Carat
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
Retailer 17
November 1, 2026
Retailer 6$895 CAD
Retailer 5$974 CAD
Retailer 14$1,038 CAD
Retailer 16$1,234 CAD
Retailer 10$1,235 CAD
Retailer 15$1,616 CAD
Retailer 11$1,658 CAD
Retailer 12$1,682 CAD
Retailer 4$1,697 CAD
Retailer 3$2,295 CAD
Retailer 13$2,651 CAD
Retailer 17$2,920 CAD
Retailer 2$4,373 CAD
Retailer 8$4,946 CAD
Rare Carat$5,951 CAD
Retailer 7$8,184 CAD
Retailer 9$9,960 CAD

6 data points across 17 retailers

14 retailers$895 CAD to $5,951 CAD

A
Cheapest Retailer
-
$895 CAD
$641 USD
A
Retailer 2
-
$974 CAD
$697 USD
View
A
Retailer 3
-
$1,038 CAD
$743 USD
View
A
Retailer 4
-
$1,234 CAD
HK$6,900 HKD
View
A
Retailer 5
-
$1,235 CAD
£696 GBP
View
B+
Retailer 6
-
$1,616 CAD
$1,157 USD
View
A
Retailer 7
-
$1,658 CAD
£935 GBP
View
B+
Retailer 8
-
$1,682 CAD
€1,147 EUR
View
B+
Retailer 9
-
$1,697 CAD
$1,215 USD
View
B+
Retailer 10
-
$2,295 CAD
$1,643 USD
View
B+
Retailer 11
-
$2,651 CAD
$1,898 USD
View
B
Retailer 12
-
$2,920 CAD
$2,090 USD
View
B
Retailer 13
-
$4,373 CAD
£2,465 GBP
View
Most Expensive
B
Rare Carat
KI5392745KF551 · Oct 28
$5,951 CAD
$4,260 USD
View
13 more retailers have this diamond
Prices start from $895 CADSave up to $5,055 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
5.45ct Radiant
$895 CAD