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Princess|Lab Grown|IGI

1.51ct D SI1 Princess Lab Grown Diamond

ID • D/SI1 • IGI LG674551404

Shape and cutting style on the report: Princess cut

Certificate IGI LG674551404

Diamond specifications and retailer prices

From $729 AUD
$512 USD
As of October 30, 2026
Save $1,083 AUD (60%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,812 AUD 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG674551404 or 674551404. Listed at 9 retailers as of October 30, 2026, with prices from $729 to $1,812, a $1,083 spread on the same certified stone. MOH London lists it at $1,812. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG674551404
Dimensions6.34 × 6.17 × 4.47 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.34 mm6.17 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG674551404
Side View
Table 66.0%Crown 36.7°Girdle: ThinPavilion 39.5°Culet: NoneDepth 72.4%

Caratlytics Score

How it works →
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: Oct 30
Current: $1,812 AUD|Low: $720 AUD|High: $1,879 AUD|Avg: $1,136 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 8$729 AUD
Retailer 4$755 AUD
Retailer 6$756 AUD
Retailer 7$826 AUD
Retailer 2$862 AUD
Retailer 5$1,183 AUD
Retailer 9$1,526 AUD
Retailer 3$1,666 AUD
MOH London$1,812 AUD

43 data points across 9 retailers

9 retailers$729 AUD to $1,812 AUD

A
Cheapest Retailer
-
$729 AUD
$512 USD
A
Retailer 2
-
$755 AUD
€505 EUR
View
B+
Retailer 3
-
$756 AUD
$531 USD
View
B+
Retailer 4
-
$826 AUD
$580 USD
View
B+
Retailer 5
-
$862 AUD
£477 GBP
View
B
Retailer 6
-
$1,183 AUD
$831 USD
View
B
Retailer 7
-
$1,526 AUD
$1,072 USD
View
B
Retailer 8
-
$1,666 AUD
$1,170 USD
View
Most Expensive
B
MOH London
LG674551404 · Nov 1
$1,812 AUD
£1,002 GBP
View
8 more retailers have this diamond
Prices start from $729 AUDSave up to $1,083 AUD

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
$729 AUD