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Radiant|Lab Grown|IGI

1.50ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG647447808

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

Certificate IGI LG647447808

Diamond specifications and retailer prices

From $297 AUD
$209 USD
As of October 25, 2026
Save $1,425 AUD (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,722 AUD at Brilliant Earth · As of October 29, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG647447808 or 647447808. Listed at 16 retailers as of October 25, 2026, with prices from $297 to $1,722, a $1,425 spread on the same certified stone. Brilliant Earth lists it at $1,722. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647447808
Dimensions7.93 × 5.74 × 3.82 mm
L/W Ratio1.38
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.93 mm5.74 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647447808
Side View
Table 66.0%Crown 42.6°Girdle: MediumPavilion 35.3°Culet: NoneDepth 66.6%

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 25
Current: $1,722 AUD|Low: $279 AUD|High: $1,836 AUD|Avg: $747 AUD|-6.2%
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
October 30, 2026
Retailer 14$279 AUD
Retailer 4$293 AUD
Retailer 8$297 AUD
Retailer 11$383 AUD
Retailer 2$528 AUD
Retailer 12$534 AUD
Retailer 3$555 AUD
Retailer 10$563 AUD
Retailer 6$623 AUD
Retailer 5$776 AUD
Retailer 9$1,011 AUD
Retailer 13$1,231 AUD
Retailer 7$1,399 AUD
Brilliant Earth$1,722 AUD

38 data points across 14 retailers

16 retailers$297 AUD to $1,722 AUD

Retailer 1
-
$279 AUD
$196 USD
Price last confirmed 32 days ago
Retailer 2
-
$293 AUD
$206 USD
View
Price last confirmed 32 days ago
Retailer 3
-
$297 AUD
$209 USD
View
Price last confirmed 18 days ago
A
Retailer 4
-
$297 AUD
$209 USD
View
Retailer 5
-
$383 AUD
£212 GBP
View
Price last confirmed 13 days ago
A
Retailer 6
-
$528 AUD
£292 GBP
View
B+
Retailer 7
-
$534 AUD
$375 USD
View
Retailer 8
-
$555 AUD
£307 GBP
View
Price last confirmed 21 days ago
A
Retailer 9
-
$563 AUD
€377 EUR
View
B+
Retailer 10
-
$623 AUD
$438 USD
View
B+
Retailer 11
-
$776 AUD
$545 USD
View
B
Retailer 12
-
$1,011 AUD
$710 USD
View
B
Retailer 13
-
$1,044 AUD
£578 GBP
View
Retailer 14
-
$1,231 AUD
$865 USD
View
Price last confirmed 9 days ago
B
Retailer 15
-
$1,399 AUD
£774 GBP
View
Most Expensive
B
Brilliant Earth
11455293A · Oct 29
$1,722 AUD
$1,210 USD
View
15 more retailers have this diamond
Prices start from $297 AUDSave up to $1,425 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.

A
1.50ct Radiant
$297 AUD