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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 $1,291 SGD
$1,010 USD
As of October 30, 2026
Save $5,089 SGD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,381 SGD 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 $1,291 to $6,381, a $5,089 spread on the same certified stone. MOH London lists it at $6,381. 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 30
Current: $6,381 SGD|Low: $1,291 SGD|High: $6,423 SGD|Avg: $3,168 SGD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 2$1,291 SGD
Retailer 3$1,703 SGD
Retailer 5$2,192 SGD
Retailer 7$2,728 SGD
Retailer 4$3,124 SGD
Retailer 6$3,682 SGD
MOH London$6,381 SGD

11 data points across 7 retailers

10 retailers$1,291 SGD to $6,381 SGD

A
Cheapest Retailer
-
$1,291 SGD
$1,010 USD
B+
Retailer 2
-
$1,703 SGD
$1,332 USD
View
A
Retailer 3
-
$1,852 SGD
$1,449 USD
View
B+
Retailer 4
-
$1,975 SGD
$1,545 USD
View
Retailer 5
-
$1,975 SGD
$1,545 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$2,192 SGD
$1,715 USD
View
B
Retailer 7
-
$3,124 SGD
$2,444 USD
View
B
Retailer 8
-
$3,682 SGD
$2,880 USD
View
B
Retailer 9
-
$3,702 SGD
$2,896 USD
View
Most Expensive
B
MOH London
LG451055777 · Oct 29
$6,381 SGD
£3,930 GBP
View
9 more retailers have this diamond
Prices start from $1,291 SGDSave up to $5,089 SGD

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
$1,291 SGD