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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 $211 USD
As of November 6, 2026
Save $849 USD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,060 USD at Brilliant Earth · As of November 4, 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 4, 2026, with prices from $211 to $1,060, a $849 spread on the same certified stone. Brilliant Earth lists it at $1,060. 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
Color
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: $1,060 USD|Low: $211 USD|High: $1,660 USD|Avg: $634 USD|-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$211 USD
Retailer 12$245 USD
Retailer 5$262 USD
Retailer 6$265 USD
Retailer 2$333 USD
Retailer 4$442 USD
Retailer 14$451 USD
Retailer 7$479 USD
Retailer 13$517 USD
Retailer 10$843 USD
Retailer 11$846 USD
Retailer 9$850 USD
Retailer 8$1,047 USD
Brilliant Earth$1,060 USD

39 data points across 14 retailers

16 retailers$211 USD to $1,060 USD

A
Cheapest Retailer
-
$211 USD
A
Retailer 2
-
$237 USD
View
Final sale: no returns
A
Retailer 3
-
$245 USD
View
A
Retailer 4
-
$262 USD
View
Retailer 5
-
$265 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$333 USD
View
Retailer 7
-
$442 USD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$451 USD
View
B+
Retailer 9
-
$462 USD
View
A
Retailer 10
-
$479 USD
View
B+
Retailer 11
-
$517 USD
View
B
Retailer 12
-
$843 USD
View
B
Retailer 13
-
$846 USD
View
B
Retailer 14
-
$850 USD
View
B
Retailer 15
-
$1,047 USD
View
Most Expensive
B
Brilliant Earth
10774028A · Nov 4
$1,060 USD
View
15 more retailers have this diamond
Prices start from $211 USDSave up to $849 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 Princess
$211 USD