Princess|Lab Grown|IGI

1.51ct I SI1 Princess Lab Grown Diamond

ID • I/SI1 • IGI LG447001296

Shape and cutting style on the report: Princess cut

Certificate IGI LG447001296

Diamond specifications and retailer prices

From €779 EUR
$870 USD
As of October 30, 2026
Save €3,596 EUR (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €4,374 EUR at MOH London · As of October 29, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447001296 or 447001296. Listed at 10 retailers as of October 29, 2026, with prices from €779 to €4,374, a €3,596 spread on the same certified stone. MOH London lists it at €4,374. 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
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.6°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447001296
Dimensions6.42 × 6.15 × 4.22 mm
L/W Ratio1.04
Culet sizePointed
Cert comments
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Top View
6.42 mm6.15 mm1.51 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447001296
Side View
Table 73.0%Crown 50.6°Girdle: Slightly ThickPavilion 36.6°Culet: NoneDepth 68.6%

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: Oct 30
Current: €4,374 EUR|Low: €779 EUR|High: €4,404 EUR|Avg: €2,180 EUR|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 2€779 EUR
Retailer 3€1,167 EUR
Retailer 5€1,508 EUR
Retailer 7€1,865 EUR
Retailer 4€2,142 EUR
Retailer 6€2,524 EUR
MOH London€4,374 EUR

10 data points across 7 retailers

10 retailers€779 EUR to €4,374 EUR

A
Cheapest Retailer
-
€779 EUR
$870 USD
B+
Retailer 2
-
€1,167 EUR
$1,304 USD
View
B+
Retailer 3
-
€1,270 EUR
$1,419 USD
View
B+
Retailer 4
-
€1,354 EUR
$1,513 USD
View
Retailer 5
-
€1,354 EUR
$1,513 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
€1,508 EUR
$1,685 USD
View
B
Retailer 7
-
€2,142 EUR
$2,393 USD
View
B
Retailer 8
-
€2,524 EUR
$2,820 USD
View
B
Retailer 9
-
€2,538 EUR
$2,836 USD
View
Most Expensive
B
MOH London
LG447001296 · Oct 29
€4,374 EUR
£3,848 GBP
View
9 more retailers have this diamond
Prices start from €779 EURSave up to €3,596 EUR

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
€779 EUR