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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 $1,139 NZD
$641 USD
As of November 2, 2026
Save $6,432 NZD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,571 NZD 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 November 1, 2026, with prices from $1,139 to $7,571, a $6,432 spread on the same certified stone. Rare Carat lists it at $7,571. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $7,571 NZD|Low: $1,139 NZD|High: $12,672 NZD|Avg: $4,260 NZD|-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$1,139 NZD
Retailer 5$1,239 NZD
Retailer 14$1,321 NZD
Retailer 16$1,570 NZD
Retailer 2$1,572 NZD
Retailer 15$2,056 NZD
Retailer 10$2,110 NZD
Retailer 12$2,140 NZD
Retailer 4$2,159 NZD
Retailer 3$2,920 NZD
Retailer 13$3,373 NZD
Retailer 17$3,715 NZD
Retailer 11$5,564 NZD
Retailer 8$6,293 NZD
Rare Carat$7,571 NZD
Retailer 7$10,413 NZD
Retailer 9$12,672 NZD

7 data points across 17 retailers

14 retailers$1,139 NZD to $7,571 NZD

A
Cheapest Retailer
-
$1,139 NZD
$641 USD
A
Retailer 2
-
$1,239 NZD
$697 USD
View
A
Retailer 3
-
$1,321 NZD
$743 USD
View
A
Retailer 4
-
$1,570 NZD
HK$6,900 HKD
View
A
Retailer 5
-
$1,572 NZD
£696 GBP
View
B+
Retailer 6
-
$2,056 NZD
$1,157 USD
View
A
Retailer 7
-
$2,110 NZD
£935 GBP
View
B+
Retailer 8
-
$2,140 NZD
€1,147 EUR
View
B+
Retailer 9
-
$2,159 NZD
$1,215 USD
View
B+
Retailer 10
-
$2,920 NZD
$1,643 USD
View
B+
Retailer 11
-
$3,373 NZD
$1,898 USD
View
B
Retailer 12
-
$3,715 NZD
$2,090 USD
View
B
Retailer 13
-
$5,564 NZD
£2,465 GBP
View
Most Expensive
B
Rare Carat
KI5392745KF551 · Nov 1
$7,571 NZD
$4,260 USD
View
13 more retailers have this diamond
Prices start from $1,139 NZDSave up to $6,432 NZD

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
$1,139 NZD