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Radiant|Lab Grown|IGI

1.81ct H SI1 Radiant Lab Grown Diamond

ID • H/SI1 • IGI LG523263333

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG523263333

Diamond specifications and retailer prices

From $2,129 NZD
$1,200 USD
As of October 31, 2026
Save $7,991 NZD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,120 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.81ct lab-grown radiant diamond

This 1.81ct lab-grown radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG523263333 or 523263333. Listed at 11 retailers as of October 31, 2026, with prices from $2,129 to $10,120, a $7,991 spread on the same certified stone. MOH London lists it at $10,120. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.6°
Pavilion angle30.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG523263333
Dimensions7.78 × 6.06 × 4.08 mm
L/W Ratio1.28
Culet sizePointed
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
7.78 mm6.06 mm1.81 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG523263333
Side View
Table 64.5%Crown 45.6°Girdle: ThickPavilion 30.2°Culet: NoneDepth 67.3%

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 31
Current: $10,120 NZD|Low: $2,129 NZD|High: $10,255 NZD|Avg: $5,136 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
November 1, 2026
Retailer 7$2,129 NZD
Retailer 6$3,055 NZD
Retailer 11$3,323 NZD
Retailer 12$3,421 NZD
Retailer 8$3,543 NZD
Retailer 5$3,610 NZD
Retailer 13$3,841 NZD
Retailer 3$4,741 NZD
Retailer 9$5,562 NZD
Retailer 2$6,109 NZD
Retailer 10$6,641 NZD
MOH London$10,120 NZD
Retailer 4$10,145 NZD

18 data points across 13 retailers

11 retailers$2,129 NZD to $10,120 NZD

A
Cheapest Retailer
-
$2,129 NZD
$1,200 USD
B+
Retailer 2
-
$3,055 NZD
$1,722 USD
View
B+
Retailer 3
-
$3,323 NZD
$1,873 USD
View
B+
Retailer 4
-
$3,421 NZD
$1,928 USD
View
Final sale: no returns
Retailer 5
-
$3,543 NZD
$1,997 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$3,543 NZD
$1,997 USD
View
B+
Retailer 7
-
$3,841 NZD
$2,165 USD
View
B
Retailer 8
-
$5,562 NZD
$3,135 USD
View
B
Retailer 9
-
$6,109 NZD
$3,443 USD
View
B
Retailer 10
-
$6,641 NZD
$3,743 USD
View
Most Expensive
B
MOH London
LG523263333 · Nov 1
$10,120 NZD
£4,491 GBP
View
10 more retailers have this diamond
Prices start from $2,129 NZDSave up to $7,991 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 Radiant
$2,129 NZD