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Radiant|Lab Grown|IGI

1.50ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG735583311

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

Certificate IGI LG735583311

Diamond specifications and retailer prices

From $452 NZD
$255 USD
As of October 30, 2026
Save $3,682 NZD (89%) vs most expensive(unlock to see where)
16 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 LG735583311 or 735583311. Listed at 16 retailers as of October 30, 2026, with prices from $452 to $4,134, a $3,682 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 angle44.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735583311
Dimensions7.71 × 5.66 × 3.94 mm
L/W Ratio1.36
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
7.71 mm5.66 mm1.50 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735583311
Side View
Table 68.0%Crown 44.4°Girdle: MediumPavilion 40.4°Culet: NoneDepth 69.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
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: $5,908 NZD|Avg: $1,971 NZD|-30.0%
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 5$452 NZD
Retailer 6$507 NZD
Retailer 4$525 NZD
Retailer 13$724 NZD
Retailer 12$786 NZD
Retailer 10$790 NZD
Retailer 9$1,019 NZD
Retailer 11$1,440 NZD
Retailer 16$1,584 NZD
Retailer 14$1,878 NZD
Retailer 7$1,993 NZD
Retailer 8$2,170 NZD
Retailer 2$2,483 NZD
Retailer 15$3,806 NZD
Retailer 3$4,028 NZD
Brilliant Earth$4,134 NZD

36 data points across 16 retailers

16 retailers$452 NZD to $4,134 NZD

A
Cheapest Retailer
-
$452 NZD
$255 USD
A
Retailer 2
-
$507 NZD
$286 USD
View
Final sale: no returns
A
Retailer 3
-
$525 NZD
$296 USD
View
A
Retailer 4
-
$724 NZD
$408 USD
View
B+
Retailer 5
-
$786 NZD
$443 USD
View
A
Retailer 6
-
$790 NZD
$445 USD
View
A
Retailer 7
-
$1,019 NZD
€547 EUR
View
A
Retailer 8
-
$1,440 NZD
A$1,249 AUD
View
A
Retailer 9
-
$1,584 NZD
$893 USD
View
A
Retailer 10
-
$1,878 NZD
$1,058 USD
View
B+
Retailer 11
-
$1,993 NZD
$1,123 USD
View
B+
Retailer 12
-
$2,170 NZD
$1,223 USD
View
B+
Retailer 13
-
$2,483 NZD
£1,102 GBP
View
Retailer 14
-
$3,806 NZD
$2,145 USD
View
Price last confirmed 11 days ago
B
Retailer 15
-
$4,028 NZD
$2,270 USD
View
Most Expensive
B
Brilliant Earth
21405665Y · Oct 31
$4,134 NZD
$2,330 USD
View
15 more retailers have this diamond
Prices start from $452 NZDSave up to $3,682 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
$452 NZD