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Princess|Lab Grown|IGI

1.80ct I SI2 Princess Lab Grown Diamond

ID • I/SI2 • IGI LG451056586

Shape and cutting style on the report: Princess cut

Certificate IGI LG451056586

Diamond specifications and retailer prices

From $1,030 USD
As of October 31, 2026
Save $3,961 USD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,991 USD 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451056586 or 451056586. Listed at 10 retailers as of October 29, 2026, with prices from $1,030 to $4,991, a $3,961 spread on the same certified stone. MOH London lists it at $4,991. 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
I
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.7°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056586
Dimensions6.80 × 6.56 × 4.55 mm
L/W Ratio1.04
Culet sizePointed
Cert comments
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Top View
6.80 mm6.56 mm1.80 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056586
Side View
Table 74.0%Crown 43.7°Girdle: MediumPavilion 38.2°Culet: NoneDepth 69.4%

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 31
Current: $4,991 USD|Low: $1,030 USD|High: $5,024 USD|Avg: $2,206 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2$1,030 USD
Retailer 3$1,332 USD
Retailer 7$1,449 USD
Retailer 8$1,491 USD
Retailer 4$1,545 USD
Retailer 10$2,134 USD
Retailer 5$2,444 USD
Retailer 9$2,880 USD
Retailer 6$2,896 USD
MOH London$4,991 USD

16 data points across 10 retailers

10 retailers$1,030 USD to $4,991 USD

A
Cheapest Retailer
-
$1,030 USD
B+
Retailer 2
-
$1,332 USD
View
B+
Retailer 3
-
$1,449 USD
View
B+
Retailer 4
-
$1,491 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,545 USD
View
Retailer 6
-
$1,545 USD
View
Price last confirmed 20 days ago
B
Retailer 7
-
$2,444 USD
View
B
Retailer 8
-
$2,880 USD
View
B
Retailer 9
-
$2,896 USD
View
Most Expensive
B
MOH London
LG451056586 · Oct 29
$4,991 USD
£3,930 GBP
View
9 more retailers have this diamond
Prices start from $1,030 USDSave up to $3,961 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
1.80ct Princess
$1,030 USD