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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 $335 USD
As of October 29, 2026
Save $1,465 USD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,800 USD 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 $335 to $1,800, a $1,465 spread on the same certified stone. MOH London lists it at $1,800. 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
Color
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

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 29
Current: $1,800 USD|Low: $335 USD|High: $1,800 USD|Avg: $920 USD
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 29, 2026
Retailer 12$335 USD
Retailer 10$388 USD
Retailer 9$415 USD
Retailer 14$415 USD
Retailer 6$538 USD
Retailer 8$718 USD
Retailer 11$758 USD
Retailer 2$823 USD
Retailer 5$860 USD
Retailer 3$870 USD
Retailer 7$917 USD
Retailer 15$1,217 USD
Retailer 13$1,473 USD
Retailer 4$1,506 USD
MOH London$1,800 USD

13 data points across 15 retailers

16 retailers$335 USD to $1,800 USD

A
Cheapest Retailer
-
$335 USD
A
Retailer 2
-
$388 USD
View
A
Retailer 3
-
$415 USD
View
A
Retailer 4
-
$415 USD
View
B+
Retailer 5
-
$538 USD
View
B+
Retailer 6
-
$718 USD
£566 GBP
View
B+
Retailer 7
-
$758 USD
View
B+
Retailer 8
-
$823 USD
£648 GBP
View
B+
Retailer 9
-
$860 USD
View
B
Retailer 10
-
$870 USD
View
B+
Retailer 11
-
$917 USD
View
B
Retailer 12
-
$1,217 USD
View
B
Retailer 13
-
$1,473 USD
View
B
Retailer 14
-
$1,506 USD
View
B
Retailer 15
-
$1,540 USD
View
Most Expensive
B
MOH London
LG515227591 · Oct 29
$1,800 USD
£1,417 GBP
View
15 more retailers have this diamond
Prices start from $335 USDSave up to $1,465 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
1.81ct Round
$335 USD