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 $255 USD
As of October 30, 2026
Save $2,075 USD (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,330 USD at Brilliant Earth · As of October 30, 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 $255 to $2,330, a $2,075 spread on the same certified stone. Brilliant Earth lists it at $2,330. 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
Color
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

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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: $2,330 USD|Low: $219 USD|High: $3,330 USD|Avg: $1,113 USD|-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
October 31, 2026
Retailer 5$255 USD
Retailer 6$286 USD
Retailer 4$296 USD
Retailer 12$408 USD
Retailer 11$443 USD
Retailer 2$445 USD
Retailer 14$581 USD
Retailer 10$812 USD
Retailer 16$893 USD
Retailer 13$1,058 USD
Retailer 7$1,123 USD
Retailer 8$1,223 USD
Retailer 9$1,407 USD
Retailer 15$2,145 USD
Retailer 3$2,270 USD
Brilliant Earth$2,330 USD

35 data points across 16 retailers

16 retailers$255 USD to $2,330 USD

A
Cheapest Retailer
-
$255 USD
A
Retailer 2
-
$286 USD
View
Final sale: no returns
A
Retailer 3
-
$296 USD
View
A
Retailer 4
-
$408 USD
View
B+
Retailer 5
-
$443 USD
View
A
Retailer 6
-
$445 USD
View
Retailer 7
-
$581 USD
€553 EUR
View
Price last confirmed 8 days ago
A
Retailer 8
-
$812 USD
A$1,249 AUD
View
A
Retailer 9
-
$893 USD
View
A
Retailer 10
-
$1,058 USD
View
B+
Retailer 11
-
$1,123 USD
View
B+
Retailer 12
-
$1,223 USD
View
B+
Retailer 13
-
$1,407 USD
£1,108 GBP
View
Retailer 14
-
$2,145 USD
View
Price last confirmed 10 days ago
B
Retailer 15
-
$2,270 USD
View
Most Expensive
B
Brilliant Earth
21405665Y · Oct 30
$2,330 USD
View
15 more retailers have this diamond
Prices start from $255 USDSave up to $2,075 USD

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
$255 USD