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Radiant|Lab Grown|IGI

1.45ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG754508818

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

Certificate IGI LG754508818

Diamond specifications and retailer prices

From $638 AUD
HK$3,500 HKD
As of November 1, 2026
Save $2,679 AUD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,317 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.45ct lab-grown radiant diamond

This 1.45ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754508818 or 754508818. Listed at 15 retailers as of October 31, 2026, with prices from $638 to $3,317, a $2,679 spread on the same certified stone. Brilliant Earth lists it at $3,317. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.45
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508818
Dimensions5.57 × 5.57 × 3.68 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.57 mm5.57 mm1.45 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508818
Side View
Table 60.0%Crown 37.8°Girdle: MED-STKPavilion 33.7°Culet: NoneDepth 66.1%

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: Nov 1
Current: $3,317 AUD|Low: $527 AUD|High: $4,328 AUD|Avg: $1,636 AUD|-23.4%
Brilliant Earth
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
November 2, 2026
Retailer 12$638 AUD
Retailer 11$641 AUD
Retailer 8$750 AUD
Retailer 3$764 AUD
Retailer 2$862 AUD
Retailer 5$999 AUD
Retailer 4$1,207 AUD
Retailer 6$1,694 AUD
Retailer 7$1,812 AUD
Retailer 14$1,821 AUD
Retailer 10$1,863 AUD
Retailer 9$2,940 AUD
Retailer 13$3,044 AUD
Brilliant Earth$3,317 AUD

44 data points across 14 retailers

15 retailers$638 AUD to $3,317 AUD

A
Cheapest Retailer
-
$638 AUD
HK$3,500 HKD
A
Retailer 2
-
$641 AUD
$450 USD
View
A
Retailer 3
-
$750 AUD
€502 EUR
View
A
Retailer 4
-
$764 AUD
$537 USD
View
A
Retailer 5
-
$862 AUD
£477 GBP
View
A
Retailer 6
-
$999 AUD
$702 USD
View
B+
Retailer 7
-
$1,207 AUD
$848 USD
View
B+
Retailer 8
-
$1,694 AUD
$1,190 USD
View
B+
Retailer 9
-
$1,812 AUD
£1,002 GBP
View
B+
Retailer 10
-
$1,821 AUD
SGD 1,729 SGD
View
Retailer 11
-
$1,863 AUD
View
Price last confirmed 25 days ago
B
Retailer 12
-
$2,840 AUD
$1,995 USD
View
B
Retailer 13
-
$2,940 AUD
$2,065 USD
View
B
Retailer 14
-
$3,044 AUD
$2,138 USD
View
Most Expensive
B
Brilliant Earth
18669149Y · Oct 31
$3,317 AUD
$2,330 USD
View
14 more retailers have this diamond
Prices start from $638 AUDSave up to $2,679 AUD

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
1.45ct Radiant
$638 AUD