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Round|Lab Grown|IGI

1.81ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG515227591

Shape and cutting style on the report: Round brilliant

Certificate IGI LG515227591

Diamond specifications and retailer prices

From £250 GBP
$335 USD
As of October 29, 2026
Save £1,093 GBP (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,343 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.81ct lab-grown round diamond

This 1.81ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG515227591 or 515227591. Listed at 16 retailers as of October 29, 2026, with prices from £250 to £1,343, a £1,093 spread on the same certified stone. MOH London lists it at £1,343. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG515227591
Dimensions7.80 × 7.83 × 4.85 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.80 mm7.83 mm1.81 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG515227591
Side View
Table 57.5%Crown 35.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.0%

Caratlytics Score

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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 29
Current: £1,343 GBP|Low: £250 GBP|High: £1,343 GBP|Avg: £683 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 13£250 GBP
Retailer 11£290 GBP
Retailer 10£310 GBP
Retailer 15£310 GBP
Retailer 2£358 GBP
Retailer 8£535 GBP
Retailer 12£566 GBP
Retailer 9£616 GBP
Retailer 6£642 GBP
Retailer 4£649 GBP
Retailer 7£684 GBP
Retailer 3£908 GBP
Retailer 14£1,099 GBP
Retailer 5£1,124 GBP
MOH London£1,343 GBP

14 data points across 15 retailers

16 retailers£250 GBP to £1,343 GBP

A
Cheapest Retailer
-
£250 GBP
$335 USD
A
Retailer 2
-
£290 GBP
$388 USD
View
A
Retailer 3
-
£310 GBP
$415 USD
View
A
Retailer 4
-
£310 GBP
$415 USD
View
B+
Retailer 5
-
£358 GBP
$480 USD
View
B+
Retailer 6
-
£535 GBP
View
B+
Retailer 7
-
£566 GBP
$758 USD
View
B+
Retailer 8
-
£616 GBP
View
B+
Retailer 9
-
£642 GBP
$860 USD
View
B
Retailer 10
-
£649 GBP
$870 USD
View
B+
Retailer 11
-
£684 GBP
$917 USD
View
B
Retailer 12
-
£908 GBP
$1,217 USD
View
B
Retailer 13
-
£1,099 GBP
$1,473 USD
View
B
Retailer 14
-
£1,124 GBP
$1,506 USD
View
B
Retailer 15
-
£1,149 GBP
$1,540 USD
View
Most Expensive
B
MOH London
LG515227591 · Oct 29
£1,343 GBP
View
15 more retailers have this diamond
Prices start from £250 GBPSave up to £1,093 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 Round
£250 GBP