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Princess|Lab Grown|IGI

1.80ct J SI1 Princess Lab Grown Diamond

ID • J/SI1 • IGI LG451055777

Shape and cutting style on the report: Princess cut

Certificate IGI LG451055777

Diamond specifications and retailer prices

From $1,792 NZD
$1,010 USD
As of October 31, 2026
Save $7,064 NZD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,856 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.8ct lab-grown princess diamond

This 1.8ct lab-grown princess sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055777 or 451055777. Listed at 10 retailers as of October 29, 2026, with prices from $1,792 to $8,856, a $7,064 spread on the same certified stone. MOH London lists it at $8,856. 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

1.80
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle45.3°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055777
Dimensions6.73 × 6.54 × 4.72 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
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Top View
6.73 mm6.54 mm1.80 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451055777
Side View
Table 70.5%Crown 45.3°Girdle: MED-STKPavilion 38.6°Culet: NoneDepth 72.2%

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 31
Current: $8,856 NZD|Low: $1,792 NZD|High: $8,914 NZD|Avg: $4,397 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 2$1,792 NZD
Retailer 3$2,363 NZD
Retailer 5$3,043 NZD
Retailer 7$3,786 NZD
Retailer 4$4,336 NZD
Retailer 6$5,110 NZD
MOH London$8,856 NZD

11 data points across 7 retailers

10 retailers$1,792 NZD to $8,856 NZD

A
Cheapest Retailer
-
$1,792 NZD
$1,010 USD
B+
Retailer 2
-
$2,363 NZD
$1,332 USD
View
A
Retailer 3
-
$2,571 NZD
$1,449 USD
View
B+
Retailer 4
-
$2,741 NZD
$1,545 USD
View
Retailer 5
-
$2,741 NZD
$1,545 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$3,043 NZD
$1,715 USD
View
B
Retailer 7
-
$4,336 NZD
$2,444 USD
View
B
Retailer 8
-
$5,110 NZD
$2,880 USD
View
B
Retailer 9
-
$5,138 NZD
$2,896 USD
View
Most Expensive
B
MOH London
LG451055777 · Oct 29
$8,856 NZD
£3,930 GBP
View
9 more retailers have this diamond
Prices start from $1,792 NZDSave up to $7,064 NZD

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
1.80ct Princess
$1,792 NZD