Princess|Lab Grown|IGI

1.51ct F SI1 Princess Lab Grown Diamond

ID • F/SI1 • IGI LG523263406

Shape and cutting style on the report: Princess cut

Certificate IGI LG523263406

Diamond specifications and retailer prices

From $291 USD
As of November 6, 2026
Save $1,153 USD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,444 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown princess diamond

This 1.51ct 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 LG523263406 or 523263406. Listed at 15 retailers as of November 1, 2026, with prices from $291 to $1,444, a $1,153 spread on the same certified stone. MOH London lists it at $1,444. 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

1.51
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG523263406
Dimensions6.35 × 6.26 × 4.57 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
6.35 mm6.26 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG523263406
Side View
Table 68.5%Crown 41.9°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 73.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,444 USD|Low: $279 USD|High: $1,670 USD|Avg: $759 USD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$291 USD
Retailer 3$360 USD
Retailer 9$360 USD
Retailer 2$458 USD
Retailer 6$515 USD
Retailer 10$591 USD
Retailer 4$631 USD
Retailer 5$1,070 USD
Retailer 7$1,107 USD
Retailer 11$1,158 USD
MOH London$1,444 USD

43 data points across 11 retailers

15 retailers$291 USD to $1,444 USD

A
Cheapest Retailer
-
$291 USD
A
Retailer 2
-
$325 USD
View
Final sale: no returns
A
Retailer 3
-
$337 USD
View
A
Retailer 4
-
$360 USD
View
Retailer 5
-
$360 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$458 USD
View
B+
Retailer 7
-
$515 USD
View
B+
Retailer 8
-
$591 USD
View
B+
Retailer 9
-
$620 USD
View
B+
Retailer 10
-
$631 USD
View
B
Retailer 11
-
$819 USD
View
B
Retailer 12
-
$1,070 USD
View
B
Retailer 13
-
$1,107 USD
View
B
Retailer 14
-
$1,158 USD
View
Most Expensive
B
MOH London
LG523263406 · Nov 1
$1,444 USD
£1,137 GBP
View
14 more retailers have this diamond
Prices start from $291 USDSave up to $1,153 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
1.51ct Princess
$291 USD