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 $1,893 AUD
£1,047 GBP
As of October 26, 2026
Save $2,122 AUD (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,015 AUD 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 26, 2026, with a 112% 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
Colour
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

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: $4,015 AUD|Low: $364 AUD|High: $4,143 AUD|Avg: $1,308 AUD|-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$364 AUD
Retailer 8$424 AUD
Retailer 4$471 AUD
Retailer 6$634 AUD
Retailer 3$705 AUD
Retailer 13$770 AUD
Retailer 12$797 AUD
Retailer 7$844 AUD
Retailer 10$875 AUD
Retailer 11$1,107 AUD
Retailer 15$1,449 AUD
Retailer 2$1,814 AUD
Retailer 9$1,893 AUD
Retailer 14$3,217 AUD
Brilliant Earth$4,015 AUD

35 data points across 15 retailers

22 retailers$1,893 AUD to $4,015 AUD

Retailer 1
-
$364 AUD
$256 USD
Price last confirmed 31 days ago
Retailer 2
-
$441 AUD
$310 USD
View
Price last confirmed 35 days ago
Retailer 3
-
$471 AUD
$331 USD
View
Price last confirmed 30 days ago
Retailer 4
-
$634 AUD
$445 USD
View
Price last confirmed 7 days ago
Retailer 5
-
$705 AUD
$495 USD
View
Price last confirmed 6 days ago
Retailer 6
-
$770 AUD
€515 EUR
View
Price last confirmed 10 days ago
Retailer 7
-
$797 AUD
ZAR 9,050 ZAR
View
Price last confirmed 9 days ago
Retailer 8
-
$844 AUD
$593 USD
View
Price last confirmed 7 days ago
Retailer 9
-
$875 AUD
£484 GBP
View
Price last confirmed 8 days ago
Retailer 10
-
$1,088 AUD
$764 USD
View
Price last confirmed 27 days ago
Retailer 11
-
$1,107 AUD
View
Price last confirmed 8 days ago
Retailer 12
-
$1,414 AUD
$993 USD
View
Price last confirmed 7 days ago
Retailer 13
-
$1,449 AUD
$1,018 USD
View
Price last confirmed 7 days ago
Retailer 14
-
$1,516 AUD
$1,065 USD
View
Price last confirmed 32 days ago
Retailer 15
-
$1,589 AUD
$1,116 USD
View
Price last confirmed 7 days ago
Retailer 16
-
$1,805 AUD
View
Price last confirmed 157 days ago
Retailer 17
-
$1,814 AUD
$1,274 USD
View
Price last confirmed 7 days ago
B+
Retailer 18
-
$1,893 AUD
£1,047 GBP
View
Retailer 19
-
$1,943 AUD
$1,365 USD
View
Price last confirmed 8 days ago
Retailer 20
-
$3,217 AUD
$2,260 USD
View
Price last confirmed 12 days ago
B
Retailer 21
-
$4,015 AUD
$2,820 USD
View
Most Expensive
Brilliant Earth
14228520A · Oct 6
$4,015 AUD
$2,820 USD
View
Price last confirmed 26 days ago
21 more retailers have this diamond
Prices start from $1,893 AUDSave up to $2,122 AUD

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.

B+
1.50ct Radiant
$1,893 AUD