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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 $819 SGD
$641 USD
As of October 30, 2026
Save $4,627 SGD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,446 SGD 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 $819 to $5,446, a $4,627 spread on the same certified stone. Rare Carat lists it at $5,446. 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
Colour
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: $5,446 SGD|Low: $819 SGD|High: $9,115 SGD|Avg: $3,065 SGD|-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 2, 2026
Retailer 6$819 SGD
Retailer 5$891 SGD
Retailer 14$950 SGD
Retailer 16$1,129 SGD
Retailer 11$1,131 SGD
Retailer 15$1,479 SGD
Retailer 2$1,518 SGD
Retailer 12$1,540 SGD
Retailer 4$1,553 SGD
Retailer 3$2,100 SGD
Retailer 13$2,426 SGD
Retailer 17$2,672 SGD
Retailer 10$4,002 SGD
Retailer 8$4,527 SGD
Rare Carat$5,446 SGD
Retailer 7$7,490 SGD
Retailer 9$9,115 SGD

7 data points across 17 retailers

14 retailers$819 SGD to $5,446 SGD

A
Cheapest Retailer
-
$819 SGD
$641 USD
A
Retailer 2
-
$891 SGD
$697 USD
View
A
Retailer 3
-
$950 SGD
$743 USD
View
A
Retailer 4
-
$1,129 SGD
HK$6,900 HKD
View
A
Retailer 5
-
$1,131 SGD
£696 GBP
View
B+
Retailer 6
-
$1,479 SGD
$1,157 USD
View
A
Retailer 7
-
$1,518 SGD
£935 GBP
View
B+
Retailer 8
-
$1,540 SGD
€1,147 EUR
View
B+
Retailer 9
-
$1,553 SGD
$1,215 USD
View
B+
Retailer 10
-
$2,100 SGD
$1,643 USD
View
B+
Retailer 11
-
$2,426 SGD
$1,898 USD
View
B
Retailer 12
-
$2,672 SGD
$2,090 USD
View
B
Retailer 13
-
$4,002 SGD
£2,465 GBP
View
Most Expensive
B
Rare Carat
KI5392745KF551 · Nov 1
$5,446 SGD
$4,260 USD
View
13 more retailers have this diamond
Prices start from $819 SGDSave up to $4,627 SGD

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
$819 SGD