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Princess|Lab Grown|IGI

1.50ct F SI1 Princess Lab Grown Diamond

ID • F/SI1 • IGI LG623405979

Shape and cutting style on the report: Princess cut

Certificate IGI LG623405979

Diamond specifications and retailer prices

From $307 AUD
As of November 6, 2026
Save $1,236 AUD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,543 AUD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.5ct lab-grown princess diamond

This 1.5ct lab-grown princess sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG623405979 or 623405979. Listed at 16 retailers as of November 6, 2026, with prices from $307 to $1,543, a $1,236 spread on the same certified stone. Brilliant Earth lists it at $1,543. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623405979
Dimensions6.04 × 5.98 × 4.60 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.04 mm5.98 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623405979
Side View
Table 76.0%Crown 45.6°Girdle: ThickPavilion 40.5°Culet: NoneDepth 76.9%

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: Nov 6
Current: $1,543 AUD|Low: $307 AUD|High: $2,416 AUD|Avg: $922 AUD|-36.1%
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
November 6, 2026
Retailer 3$307 AUD
Retailer 12$357 AUD
Retailer 5$381 AUD
Retailer 6$386 AUD
Retailer 2$485 AUD
Retailer 4$643 AUD
Retailer 14$656 AUD
Retailer 7$697 AUD
Retailer 13$752 AUD
Retailer 10$1,227 AUD
Retailer 11$1,231 AUD
Retailer 9$1,237 AUD
Retailer 8$1,524 AUD
Brilliant Earth$1,543 AUD

39 data points across 14 retailers

16 retailers$307 AUD to $1,543 AUD

A
Cheapest Retailer
-
$307 AUD
A
Retailer 2
-
$345 AUD
View
Final sale: no returns
A
Retailer 3
-
$357 AUD
View
A
Retailer 4
-
$381 AUD
View
Retailer 5
-
$386 AUD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$485 AUD
View
Retailer 7
-
$643 AUD
View
Price last confirmed 9 days ago
A
Retailer 8
-
$656 AUD
View
B+
Retailer 9
-
$672 AUD
View
A
Retailer 10
-
$697 AUD
View
B+
Retailer 11
-
$752 AUD
View
B
Retailer 12
-
$1,227 AUD
View
B
Retailer 13
-
$1,231 AUD
View
B
Retailer 14
-
$1,237 AUD
View
B
Retailer 15
-
$1,524 AUD
View
Most Expensive
B
Brilliant Earth
10774028A · Nov 6
$1,543 AUD
$1,060 USD
View
15 more retailers have this diamond
Prices start from $307 AUDSave up to $1,236 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 Princess
$307 AUD