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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 $507 NZD
$285 USD
As of November 2, 2026
Save $3,368 NZD (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,875 NZD at Brilliant Earth · As of November 2, 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 November 2, 2026, with prices from $507 to $3,875, a $3,368 spread on the same certified stone. Brilliant Earth lists it at $3,875. 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: Nov 2
Current: $3,875 NZD|Low: $487 NZD|High: $3,875 NZD|Avg: $1,353 NZD|+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 2, 2026
Retailer 3$507 NZD
Retailer 7$588 NZD
Retailer 4$629 NZD
Retailer 8$629 NZD
Retailer 2$664 NZD
Retailer 15$906 NZD
Retailer 12$1,028 NZD
Retailer 6$1,034 NZD
Retailer 10$1,083 NZD
Retailer 9$1,110 NZD
Retailer 14$1,528 NZD
Retailer 16$1,930 NZD
Retailer 5$2,019 NZD
Retailer 13$2,109 NZD
Retailer 11$2,519 NZD
Brilliant Earth$3,875 NZD

38 data points across 16 retailers

22 retailers$507 NZD to $3,875 NZD

A
Cheapest Retailer
-
$507 NZD
$285 USD
A
Retailer 2
-
$567 NZD
$319 USD
View
Final sale: no returns
A
Retailer 3
-
$588 NZD
$331 USD
View
A
Retailer 4
-
$629 NZD
$354 USD
View
Retailer 5
-
$629 NZD
$354 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$664 NZD
£294 GBP
View
A
Retailer 7
-
$906 NZD
$510 USD
View
A
Retailer 8
-
$1,028 NZD
€551 EUR
View
A
Retailer 9
-
$1,034 NZD
$582 USD
View
A
Retailer 10
-
$1,083 NZD
ZAR 9,848 ZAR
View
A
Retailer 11
-
$1,110 NZD
£492 GBP
View
A
Retailer 12
-
$1,210 NZD
$681 USD
View
B+
Retailer 13
-
$1,528 NZD
A$1,323 AUD
View
B+
Retailer 14
-
$1,630 NZD
$917 USD
View
B+
Retailer 15
-
$1,930 NZD
$1,086 USD
View
B+
Retailer 16
-
$2,019 NZD
$1,136 USD
View
B+
Retailer 17
-
$2,107 NZD
$1,186 USD
View
B+
Retailer 18
-
$2,109 NZD
A$1,826 AUD
View
B
Retailer 19
-
$2,319 NZD
$1,305 USD
View
B
Retailer 20
-
$2,438 NZD
£1,080 GBP
View
B+
Retailer 21
-
$2,519 NZD
£1,116 GBP
View
Most Expensive
B
Brilliant Earth
8263391A · Nov 2
$3,875 NZD
$2,180 USD
View
21 more retailers have this diamond
Prices start from $507 NZDSave up to $3,368 NZD

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
$507 NZD