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Radiant|Lab Grown|IGI

1.31ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG602388297

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

Certificate IGI LG602388297

Diamond specifications and retailer prices

From $406 AUD
$285 USD
As of October 30, 2026
Save $2,698 AUD (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,103 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.31ct lab-grown radiant diamond

This 1.31ct 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 LG602388297 or 602388297. Listed at 22 retailers as of October 30, 2026, with prices from $406 to $3,103, a $2,698 spread on the same certified stone. Brilliant Earth lists it at $3,103. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602388297
Dimensions7.96 × 5.44 × 3.63 mm
L/W Ratio1.46
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
7.96 mm5.44 mm1.31 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602388297
Side View
Table 66.0%Crown 43°Girdle: MediumPavilion 35.8°Culet: NoneDepth 66.7%

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 30
Current: $3,103 AUD|Low: $390 AUD|High: $3,103 AUD|Avg: $1,085 AUD|+0.9%
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
Retailer 15
Retailer 16
November 1, 2026
Retailer 3$406 AUD
Retailer 7$471 AUD
Retailer 4$504 AUD
Retailer 8$504 AUD
Retailer 9$532 AUD
Retailer 15$726 AUD
Retailer 11$824 AUD
Retailer 6$829 AUD
Retailer 14$865 AUD
Retailer 10$889 AUD
Retailer 13$1,224 AUD
Retailer 16$1,546 AUD
Retailer 5$1,617 AUD
Retailer 12$1,690 AUD
Retailer 2$2,018 AUD
Brilliant Earth$3,103 AUD

38 data points across 16 retailers

22 retailers$406 AUD to $3,103 AUD

A
Cheapest Retailer
-
$406 AUD
$285 USD
A
Retailer 2
-
$454 AUD
$319 USD
View
Final sale: no returns
A
Retailer 3
-
$471 AUD
$331 USD
View
A
Retailer 4
-
$504 AUD
$354 USD
View
Retailer 5
-
$504 AUD
$354 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$532 AUD
£294 GBP
View
A
Retailer 7
-
$726 AUD
$510 USD
View
A
Retailer 8
-
$824 AUD
€551 EUR
View
A
Retailer 9
-
$829 AUD
$582 USD
View
A
Retailer 10
-
$865 AUD
ZAR 9,813 ZAR
View
A
Retailer 11
-
$889 AUD
£492 GBP
View
A
Retailer 12
-
$969 AUD
$681 USD
View
B+
Retailer 13
-
$1,224 AUD
View
B+
Retailer 14
-
$1,305 AUD
$917 USD
View
B+
Retailer 15
-
$1,546 AUD
$1,086 USD
View
B+
Retailer 16
-
$1,617 AUD
$1,136 USD
View
B+
Retailer 17
-
$1,688 AUD
$1,186 USD
View
B+
Retailer 18
-
$1,690 AUD
View
B
Retailer 19
-
$1,858 AUD
$1,305 USD
View
B
Retailer 20
-
$1,953 AUD
£1,080 GBP
View
B+
Retailer 21
-
$2,018 AUD
£1,116 GBP
View
Most Expensive
B
Brilliant Earth
8263391A · Oct 31
$3,103 AUD
$2,180 USD
View
21 more retailers have this diamond
Prices start from $406 AUDSave up to $2,698 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
1.31ct Radiant
$406 AUD