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Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG654418105

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

Certificate IGI LG654418105

Diamond specifications and retailer prices

From $596 AUD
$419 USD
As of November 2, 2026
Save $2,171 AUD (78%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,324 AUD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG654418105 or 654418105. Listed at 25 retailers as of November 1, 2026, with a 364% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG654418105
Dimensions8.05 × 5.68 × 3.83 mm
L/W Ratio1.42
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
8.05 mm5.68 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG654418105
Side View
Table 66.0%Crown 40.5°Girdle: MediumPavilion 33.9°Culet: NoneDepth 67.4%

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 2
Current: $3,324 AUD|Low: $572 AUD|High: $3,374 AUD|Avg: $1,529 AUD|-1.5%
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
Retailer 18
November 2, 2026
Retailer 18$596 AUD
Retailer 6$668 AUD
Retailer 10$668 AUD
Retailer 4$739 AUD
Retailer 7$739 AUD
Retailer 16$947 AUD
Retailer 12$1,039 AUD
Retailer 9$1,082 AUD
Retailer 11$1,218 AUD
Retailer 13$1,229 AUD
Retailer 2$1,275 AUD
Retailer 14$1,722 AUD
Retailer 17$2,074 AUD
Retailer 8$2,351 AUD
Retailer 5$2,377 AUD
Retailer 3$2,708 AUD
Retailer 15$2,730 AUD
Rare Carat$3,324 AUD

45 data points across 18 retailers

25 retailers$596 AUD to $2,767 AUD

A
Cheapest Retailer
-
$596 AUD
$419 USD
A
Retailer 2
-
$668 AUD
$469 USD
View
Final sale: no returns
A
Retailer 3
-
$668 AUD
$469 USD
View
Retailer 4
-
$739 AUD
$519 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$739 AUD
$519 USD
View
A
Retailer 6
-
$820 AUD
HK$4,500 HKD
View
A
Retailer 7
-
$947 AUD
$665 USD
View
A
Retailer 8
-
$1,039 AUD
$730 USD
View
A
Retailer 9
-
$1,082 AUD
$760 USD
View
A
Retailer 10
-
$1,218 AUD
£674 GBP
View
A
Retailer 11
-
$1,229 AUD
€822 EUR
View
A
Retailer 12
-
$1,275 AUD
ZAR 14,470 ZAR
View
B+
Retailer 13
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$1,506 AUD
$1,058 USD
View
B+
Retailer 14
-
$1,722 AUD
View
B+
Retailer 15
-
$1,917 AUD
£1,061 GBP
View
B+
Retailer 16
-
$2,074 AUD
$1,457 USD
View
B+
Retailer 17
-
$2,148 AUD
£1,188 GBP
View
B+
Retailer 18
-
$2,351 AUD
SGD 2,232 SGD
View
B+
Retailer 19
-
$2,377 AUD
$1,670 USD
View
B
Retailer 20
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$2,425 AUD
$1,703 USD
View
B
Retailer 21
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$2,693 AUD
$1,892 USD
View
B
Retailer 22
-
$2,708 AUD
$1,902 USD
View
B+
Retailer 23
-
$2,730 AUD
£1,510 GBP
View
B
Retailer 24
-
$2,767 AUD
$1,944 USD
View
Most Expensive
Rare Carat
197B56-7A · Oct 18
$3,324 AUD
$2,335 USD
View
Price last confirmed 14 days ago
24 more retailers have this diamond
Prices start from $596 AUDSave up to $2,171 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
1.51ct Radiant
$596 AUD