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Princess|Lab Grown|IGI

1.81ct E SI1 Princess Lab Grown Diamond

ID • E/SI1 • IGI LG512221693

Shape and cutting style on the report: Princess cut

Certificate IGI LG512221693

Diamond specifications and retailer prices

From £179 GBP
$238 USD
As of October 25, 2026
Save £661 GBP (79%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £840 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.81ct lab-grown princess diamond

This 1.81ct lab-grown princess sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512221693 or 512221693. Listed at 13 retailers as of October 25, 2026, with prices from £179 to £840, a £661 spread on the same certified stone. MOH London lists it at £840. 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

1.81
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.1°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512221693
Dimensions6.60 × 6.53 × 4.73 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.60 mm6.53 mm1.81 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512221693
Side View
Table 71.0%Crown 45.1°Girdle: MediumPavilion 38.2°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 25
Current: £840 GBP|Low: £138 GBP|High: £846 GBP|Avg: £437 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8£138 GBP
Retailer 6£179 GBP
Retailer 7£179 GBP
Retailer 4£230 GBP
Retailer 9£313 GBP
Retailer 2£325 GBP
Retailer 10£461 GBP
Retailer 5£577 GBP
Retailer 11£615 GBP
Retailer 3£827 GBP
MOH London£840 GBP

43 data points across 11 retailers

13 retailers£179 GBP to £840 GBP

Retailer 1
-
£138 GBP
$184 USD
Price last confirmed 27 days ago
Retailer 2
-
£167 GBP
$223 USD
View
Price last confirmed 27 days ago
Retailer 3
-
£179 GBP
$238 USD
View
Price last confirmed 26 days ago
A
Retailer 4
-
£179 GBP
$238 USD
View
A
Retailer 5
-
£230 GBP
View
B+
Retailer 6
-
£313 GBP
$417 USD
View
A
Retailer 7
-
£325 GBP
View
B+
Retailer 8
-
£461 GBP
$614 USD
View
Retailer 9
-
£574 GBP
$765 USD
View
Price last confirmed 25 days ago
B
Retailer 10
-
£577 GBP
$768 USD
View
B
Retailer 11
-
£615 GBP
$819 USD
View
B
Retailer 12
-
£827 GBP
HK$8,600 HKD
View
Most Expensive
B
MOH London
LG512221693 · Oct 29
£840 GBP
View
12 more retailers have this diamond
Prices start from £179 GBPSave up to £661 GBP

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
1.81ct Princess
£179 GBP