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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 $596 NZD
$335 USD
As of October 29, 2026
Save $2,608 NZD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,204 NZD 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 $596 to $3,204, a $2,608 spread on the same certified stone. MOH London lists it at $3,204. 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: $3,204 NZD|Low: $596 NZD|High: $3,204 NZD|Avg: $1,630 NZD
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 12$596 NZD
Retailer 10$691 NZD
Retailer 9$739 NZD
Retailer 14$739 NZD
Retailer 6$958 NZD
Retailer 2$1,275 NZD
Retailer 11$1,350 NZD
Retailer 8$1,469 NZD
Retailer 5$1,531 NZD
Retailer 3$1,549 NZD
Retailer 7$1,632 NZD
Retailer 15$2,167 NZD
Retailer 13$2,623 NZD
Retailer 4$2,681 NZD
MOH London$3,204 NZD

14 data points across 15 retailers

16 retailers$596 NZD to $3,204 NZD

A
Cheapest Retailer
-
$596 NZD
$335 USD
A
Retailer 2
-
$691 NZD
$388 USD
View
A
Retailer 3
-
$739 NZD
$415 USD
View
A
Retailer 4
-
$739 NZD
$415 USD
View
B+
Retailer 5
-
$958 NZD
$538 USD
View
B+
Retailer 6
-
$1,275 NZD
£564 GBP
View
B+
Retailer 7
-
$1,350 NZD
$758 USD
View
B+
Retailer 8
-
$1,469 NZD
£650 GBP
View
B+
Retailer 9
-
$1,531 NZD
$860 USD
View
B
Retailer 10
-
$1,549 NZD
$870 USD
View
B+
Retailer 11
-
$1,632 NZD
$917 USD
View
B
Retailer 12
-
$2,167 NZD
$1,217 USD
View
B
Retailer 13
-
$2,623 NZD
$1,473 USD
View
B
Retailer 14
-
$2,681 NZD
$1,506 USD
View
B
Retailer 15
-
$2,742 NZD
$1,540 USD
View
Most Expensive
B
MOH London
LG515227591 · Oct 29
$3,204 NZD
£1,417 GBP
View
15 more retailers have this diamond
Prices start from $596 NZDSave up to $2,608 NZD

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
$596 NZD