CaratHunter
Plans
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 $870 USD
As of November 2, 2026
Save $3,992 USD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,862 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 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 November 1, 2026, with prices from $870 to $4,862, a $3,992 spread on the same certified stone. MOH London lists it at $4,862. 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
undefined
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: Nov 2
Current: $4,862 USD|Low: $870 USD|High: $4,920 USD|Avg: $2,422 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 2$870 USD
Retailer 3$1,304 USD
Retailer 5$1,685 USD
Retailer 7$2,084 USD
Retailer 4$2,393 USD
Retailer 6$2,820 USD
MOH London$4,862 USD

11 data points across 7 retailers

10 retailers$870 USD to $4,862 USD

A
Cheapest Retailer
-
$870 USD
B+
Retailer 2
-
$1,304 USD
View
B+
Retailer 3
-
$1,419 USD
View
B
Retailer 4
-
$1,513 USD
View
Retailer 5
-
$1,513 USD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$1,685 USD
View
B
Retailer 7
-
$2,393 USD
View
B
Retailer 8
-
$2,820 USD
View
B
Retailer 9
-
$2,836 USD
View
Most Expensive
B
MOH London
LG447001296 · Nov 1
$4,862 USD
£3,828 GBP
View
9 more retailers have this diamond
Prices start from $870 USDSave up to $3,992 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
$870 USD