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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 $381 NZD
As of November 6, 2026
Save $1,532 NZD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,912 NZD 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 $381 to $1,912, a $1,532 spread on the same certified stone. Brilliant Earth lists it at $1,912. 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: $1,912 NZD|Low: $381 NZD|High: $2,994 NZD|Avg: $1,143 NZD|-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$381 NZD
Retailer 12$442 NZD
Retailer 5$473 NZD
Retailer 6$478 NZD
Retailer 2$601 NZD
Retailer 4$797 NZD
Retailer 14$814 NZD
Retailer 7$864 NZD
Retailer 13$933 NZD
Retailer 10$1,521 NZD
Retailer 11$1,526 NZD
Retailer 9$1,533 NZD
Retailer 8$1,889 NZD
Brilliant Earth$1,912 NZD

39 data points across 14 retailers

16 retailers$381 NZD to $1,912 NZD

A
Cheapest Retailer
-
$381 NZD
A
Retailer 2
-
$428 NZD
View
Final sale: no returns
A
Retailer 3
-
$442 NZD
View
A
Retailer 4
-
$473 NZD
View
Retailer 5
-
$478 NZD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$601 NZD
View
Retailer 7
-
$797 NZD
View
Price last confirmed 9 days ago
A
Retailer 8
-
$814 NZD
View
B+
Retailer 9
-
$833 NZD
View
A
Retailer 10
-
$864 NZD
View
B+
Retailer 11
-
$933 NZD
View
B
Retailer 12
-
$1,521 NZD
View
B
Retailer 13
-
$1,526 NZD
View
B
Retailer 14
-
$1,533 NZD
View
B
Retailer 15
-
$1,889 NZD
View
Most Expensive
B
Brilliant Earth
10774028A · Nov 6
$1,912 NZD
$1,060 USD
View
15 more retailers have this diamond
Prices start from $381 NZDSave up to $1,532 NZD

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
$381 NZD