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Radiant|Lab Grown|IGI

1.50ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG770617468

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

Certificate IGI LG770617468

Diamond specifications and retailer prices

From $456 NZD
$257 USD
As of October 30, 2026
Save $3,678 NZD (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,134 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.5ct lab-grown radiant diamond

This 1.5ct 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 LG770617468 or 770617468. Listed at 18 retailers as of October 30, 2026, with prices from $456 to $4,134, a $3,678 spread on the same certified stone. Brilliant Earth lists it at $4,134. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.9°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770617468
Dimensions7.94 × 5.60 × 3.85 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
7.94 mm5.60 mm1.50 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770617468
Side View
Table 64.0%Crown 47.9°Girdle: MED-STKPavilion 36.3°Culet: NoneDepth 68.7%

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: $4,134 NZD|Low: $452 NZD|High: $4,968 NZD|Avg: $1,784 NZD|-16.8%
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
Retailer 17
Retailer 18
November 1, 2026
Retailer 17$456 NZD
Retailer 6$511 NZD
Retailer 16$529 NZD
Retailer 2$643 NZD
Retailer 5$724 NZD
Retailer 3$786 NZD
Retailer 12$790 NZD
Retailer 11$1,019 NZD
Retailer 4$1,031 NZD
Retailer 15$1,452 NZD
Retailer 9$1,584 NZD
Retailer 7$1,878 NZD
Retailer 14$2,009 NZD
Retailer 10$2,170 NZD
Retailer 13$2,517 NZD
Retailer 8$3,806 NZD
Retailer 18$4,045 NZD
Brilliant Earth$4,134 NZD

33 data points across 18 retailers

18 retailers$456 NZD to $4,134 NZD

A
Cheapest Retailer
-
$456 NZD
$257 USD
A
Retailer 2
-
$511 NZD
$288 USD
View
Final sale: no returns
A
Retailer 3
-
$529 NZD
$298 USD
View
A
Retailer 4
-
$643 NZD
£285 GBP
View
A
Retailer 5
-
$724 NZD
$408 USD
View
B+
Retailer 6
-
$786 NZD
$443 USD
View
A
Retailer 7
-
$790 NZD
$445 USD
View
A
Retailer 8
-
$1,019 NZD
€547 EUR
View
A
Retailer 9
-
$1,031 NZD
$581 USD
View
A
Retailer 10
-
$1,452 NZD
A$1,259 AUD
View
A
Retailer 11
-
$1,584 NZD
$893 USD
View
A
Retailer 12
-
$1,878 NZD
$1,058 USD
View
B+
Retailer 13
-
$2,009 NZD
$1,132 USD
View
B+
Retailer 14
-
$2,170 NZD
$1,223 USD
View
B+
Retailer 15
-
$2,517 NZD
£1,117 GBP
View
Retailer 16
-
$3,806 NZD
$2,145 USD
View
Price last confirmed 11 days ago
B
Retailer 17
-
$4,045 NZD
$2,280 USD
View
Most Expensive
B
Brilliant Earth
21400238Y · Oct 31
$4,134 NZD
$2,330 USD
View
17 more retailers have this diamond
Prices start from $456 NZDSave up to $3,678 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
1.50ct Radiant
$456 NZD