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Radiant|Lab Grown|IGI

1.59ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG618454483

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

Certificate IGI LG618454483

Diamond specifications and retailer prices

From $427 AUD
$300 USD
As of October 27, 2026
Save $3,829 AUD (90%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $4,256 AUD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.59ct lab-grown radiant diamond

This 1.59ct 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 LG618454483 or 618454483. Listed at 30 retailers as of October 27, 2026, with prices from $427 to $4,256, a $3,829 spread on the same certified stone. Brilliant Earth lists it at $4,256. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.59
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle32.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618454483
Dimensions8.62 × 5.76 × 3.75 mm
L/W Ratio1.50
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
8.62 mm5.76 mm1.59 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618454483
Side View
Table 63.0%Crown 37.6°Girdle: MediumPavilion 32.9°Culet: NoneDepth 65.1%

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 27
Current: $4,256 AUD|Low: $427 AUD|High: $4,256 AUD|Avg: $1,449 AUD
Brilliant Earth
Retailer 2
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Retailer 6
Retailer 7
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Retailer 11
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Retailer 21
October 29, 2026
Retailer 21$427 AUD
Retailer 16$508 AUD
Retailer 10$619 AUD
Retailer 3$752 AUD
Retailer 18$754 AUD
Retailer 19$868 AUD
Retailer 8$904 AUD
Retailer 17$911 AUD
Retailer 2$938 AUD
Retailer 9$1,195 AUD
Retailer 15$1,236 AUD
Retailer 5$1,586 AUD
Retailer 20$1,630 AUD
Retailer 14$1,765 AUD
Retailer 11$1,773 AUD
Retailer 12$1,787 AUD
Retailer 7$2,040 AUD
Retailer 13$2,137 AUD
Retailer 6$2,155 AUD
Retailer 4$2,168 AUD
Brilliant Earth$4,256 AUD

36 data points across 21 retailers

30 retailers$427 AUD to $4,256 AUD

A
Cheapest Retailer
-
$427 AUD
$300 USD
A
Retailer 2
-
$427 AUD
$300 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
$446 AUD
$313 USD
View
Price last confirmed 29 days ago
A
Retailer 4
-
$508 AUD
$357 USD
View
Final sale: no returns
A
Retailer 5
-
$517 AUD
$363 USD
View
Price last confirmed 32 days ago
A
Retailer 6
-
$531 AUD
$373 USD
View
Price last confirmed 26 days ago
A
Retailer 7
-
$545 AUD
$383 USD
View
Price last confirmed 30 days ago
A
Retailer 8
-
$619 AUD
HK$3,400 HKD
View
A
Retailer 9
-
$752 AUD
$528 USD
View
A
Retailer 10
-
$754 AUD
$530 USD
View
A
Retailer 11
-
$868 AUD
€581 EUR
View
A
Retailer 12
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$904 AUD
$635 USD
View
A
Retailer 13
-
$911 AUD
ZAR 10,343 ZAR
View
A
Retailer 14
-
$938 AUD
£519 GBP
View
A
Retailer 15
-
$1,195 AUD
$840 USD
View
A
Retailer 16
-
$1,236 AUD
View
A
Retailer 17
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$1,586 AUD
$1,114 USD
View
B+
Retailer 18
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$1,630 AUD
$1,145 USD
View
B+
Retailer 19
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$1,705 AUD
$1,198 USD
View
Price last confirmed 19 days ago
B+
Retailer 20
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$1,705 AUD
$1,198 USD
View
B+
Retailer 21
-
$1,765 AUD
$1,240 USD
View
B+
Retailer 22
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$1,773 AUD
$1,245 USD
View
B+
Retailer 23
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$1,776 AUD
$1,248 USD
View
Price last confirmed 28 days ago
B+
Retailer 24
-
$1,787 AUD
SGD 1,697 SGD
View
B+
Retailer 25
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$2,040 AUD
$1,433 USD
View
B+
Retailer 26
-
$2,137 AUD
£1,182 GBP
View
B+
Retailer 27
-
$2,155 AUD
$1,514 USD
View
B+
Retailer 28
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$2,168 AUD
View
Price last confirmed 24 days ago
B
Retailer 29
-
$4,026 AUD
£2,227 GBP
View
Most Expensive
B
Brilliant Earth
9013112A · Oct 28
$4,256 AUD
$2,990 USD
View
29 more retailers have this diamond
Prices start from $427 AUDSave up to $3,829 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
1.59ct Radiant
$427 AUD