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Radiant|Lab Grown|IGI

1.59ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG665410217

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

Certificate IGI LG665410217

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)
32 retailers carry this diamond
Most expensive: $4,256 AUD at Brilliant Earth · As of October 29, 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 LG665410217 or 665410217. Listed at 32 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 angle42.9°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665410217
Dimensions8.50 × 5.71 × 3.74 mm
L/W Ratio1.49
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
8.50 mm5.71 mm1.59 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665410217
Side View
Table 63.0%Crown 42.9°Girdle: MED-STKPavilion 32.7°Culet: NoneDepth 65.5%

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: $1,535 AUD
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
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Retailer 12
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Retailer 22
October 29, 2026
Retailer 3$427 AUD
Retailer 16$508 AUD
Retailer 10$619 AUD
Retailer 4$752 AUD
Retailer 18$754 AUD
Retailer 21$868 AUD
Retailer 8$904 AUD
Retailer 17$911 AUD
Retailer 2$938 AUD
Retailer 9$1,195 AUD
Retailer 13$1,236 AUD
Retailer 5$1,586 AUD
Retailer 22$1,630 AUD
Retailer 15$1,765 AUD
Retailer 12$1,773 AUD
Retailer 14$1,787 AUD
Retailer 7$2,040 AUD
Retailer 19$2,128 AUD
Retailer 6$2,155 AUD
Retailer 11$2,168 AUD
Retailer 20$3,231 AUD
Brilliant Earth$4,256 AUD

36 data points across 22 retailers

32 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
-
$904 AUD
$635 USD
View
A
Retailer 13
-
$911 AUD
ZAR 10,343 ZAR
View
A
Retailer 14
-
$930 AUD
£515 GBP
View
Price last confirmed 14 days ago
A
Retailer 15
-
$938 AUD
£519 GBP
View
A
Retailer 16
-
$1,195 AUD
$840 USD
View
A
Retailer 17
-
$1,236 AUD
View
A
Retailer 18
-
$1,586 AUD
$1,114 USD
View
B+
Retailer 19
-
$1,630 AUD
$1,145 USD
View
B+
Retailer 20
-
$1,705 AUD
$1,198 USD
View
Price last confirmed 19 days ago
B+
Retailer 21
-
$1,705 AUD
$1,198 USD
View
B+
Retailer 22
-
$1,765 AUD
$1,240 USD
View
B+
Retailer 23
-
$1,773 AUD
$1,245 USD
View
B+
Retailer 24
-
$1,776 AUD
$1,248 USD
View
Price last confirmed 29 days ago
B+
Retailer 25
-
$1,787 AUD
SGD 1,697 SGD
View
B+
Retailer 26
-
$2,040 AUD
$1,433 USD
View
B+
Retailer 27
-
$2,128 AUD
£1,177 GBP
View
B+
Retailer 28
-
$2,155 AUD
$1,514 USD
View
B+
Retailer 29
-
$2,168 AUD
View
Price last confirmed 24 days ago
B+
Retailer 30
-
$3,231 AUD
$2,270 USD
View
Price last confirmed 10 days ago
B
Retailer 31
-
$4,026 AUD
£2,227 GBP
View
Most Expensive
B
Brilliant Earth
12598535A · Oct 29
$4,256 AUD
$2,990 USD
View
31 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