Radiant|Lab Grown|IGI

1.50ct E IF Radiant Lab Grown Diamond

VG • E/IF • IGI LG598394317

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

Certificate IGI LG598394317

Diamond specifications and retailer prices

From $445 USD
As of October 25, 2026
Save $2,375 USD (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,820 USD at Brilliant Earth · As of October 6, 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 very-good cut grade and certified by IGI LG598394317 or 598394317. Listed at 22 retailers as of October 25, 2026, with a 534% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
E
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598394317
Dimensions7.76 × 5.67 × 3.96 mm
L/W Ratio1.37
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
7.76 mm5.67 mm1.50 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598394317
Side View
Table 66.0%Crown 36.2°Girdle: Slightly ThickPavilion 36.7°Culet: NoneDepth 69.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 25
Current: $2,820 USD|Low: $256 USD|High: $2,910 USD|Avg: $912 USD|-3.1%
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
October 26, 2026
Retailer 5$256 USD
Retailer 8$298 USD
Retailer 4$331 USD
Retailer 6$445 USD
Retailer 3$495 USD
Retailer 13$541 USD
Retailer 12$560 USD
Retailer 7$593 USD
Retailer 10$614 USD
Retailer 11$777 USD
Retailer 15$1,018 USD
Retailer 2$1,274 USD
Retailer 9$1,330 USD
Retailer 14$2,260 USD
Brilliant Earth$2,820 USD

37 data points across 15 retailers

22 retailers$445 USD to $2,820 USD

Retailer 1
-
$256 USD
Price last confirmed 29 days ago
Retailer 2
-
$310 USD
View
Price last confirmed 33 days ago
Retailer 3
-
$331 USD
View
Price last confirmed 28 days ago
B+
Retailer 4
-
$445 USD
View
A
Retailer 5
-
$495 USD
View
Retailer 6
-
$541 USD
€515 EUR
View
Price last confirmed 8 days ago
Retailer 7
-
$560 USD
ZAR 9,050 ZAR
View
Price last confirmed 7 days ago
A
Retailer 8
-
$593 USD
View
A
Retailer 9
-
$614 USD
£484 GBP
View
Retailer 10
-
$764 USD
View
Price last confirmed 25 days ago
A
Retailer 11
-
$777 USD
A$1,196 AUD
View
B+
Retailer 12
-
$993 USD
View
B+
Retailer 13
-
$1,018 USD
View
Retailer 14
-
$1,065 USD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
$1,116 USD
View
Retailer 16
-
$1,268 USD
A$1,950 AUD
View
Price last confirmed 155 days ago
B+
Retailer 17
-
$1,274 USD
View
B+
Retailer 18
-
$1,330 USD
£1,047 GBP
View
B+
Retailer 19
-
$1,365 USD
View
Retailer 20
-
$2,260 USD
View
Price last confirmed 10 days ago
B
Retailer 21
-
$2,820 USD
View
Most Expensive
Brilliant Earth
14228520A · Oct 6
$2,820 USD
View
Price last confirmed 24 days ago
21 more retailers have this diamond
Prices start from $445 USDSave up to $2,375 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
$445 USD