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 $641 USD
As of October 30, 2026
Save $3,619 USD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,260 USD at Rare Carat · As of November 1, 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 30, 2026, with prices from $641 to $4,260, a $3,619 spread on the same certified stone. Rare Carat lists it at $4,260. 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

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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: $4,260 USD|Low: $641 USD|High: $7,130 USD|Avg: $2,427 USD|-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$641 USD
Retailer 5$697 USD
Retailer 14$743 USD
Retailer 16$883 USD
Retailer 10$884 USD
Retailer 15$1,157 USD
Retailer 11$1,187 USD
Retailer 12$1,204 USD
Retailer 4$1,215 USD
Retailer 3$1,643 USD
Retailer 13$1,898 USD
Retailer 17$2,090 USD
Retailer 2$3,131 USD
Retailer 8$3,541 USD
Rare Carat$4,260 USD
Retailer 7$5,859 USD
Retailer 9$7,130 USD

6 data points across 17 retailers

14 retailers$641 USD to $4,260 USD

A
Cheapest Retailer
-
$641 USD
A
Retailer 2
-
$697 USD
View
A
Retailer 3
-
$743 USD
View
A
Retailer 4
-
$883 USD
HK$6,900 HKD
View
A
Retailer 5
-
$884 USD
£696 GBP
View
B+
Retailer 6
-
$1,157 USD
View
A
Retailer 7
-
$1,187 USD
£935 GBP
View
B+
Retailer 8
-
$1,204 USD
€1,147 EUR
View
B+
Retailer 9
-
$1,215 USD
View
B+
Retailer 10
-
$1,643 USD
View
B+
Retailer 11
-
$1,898 USD
View
B
Retailer 12
-
$2,090 USD
View
B
Retailer 13
-
$3,131 USD
£2,465 GBP
View
Most Expensive
B
Rare Carat
KI5392745KF551 · Nov 1
$4,260 USD
View
13 more retailers have this diamond
Prices start from $641 USDSave up to $3,619 USD

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
$641 USD