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Radiant|Lab Grown|IGI

1.81ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG533209306

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

Certificate IGI LG533209306

Diamond specifications and retailer prices

From $480 AUD
$337 USD
As of November 1, 2026
Save $1,652 AUD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,132 AUD 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG533209306 or 533209306. Listed at 13 retailers as of November 1, 2026, with prices from $480 to $2,132, a $1,652 spread on the same certified stone. MOH London lists it at $2,132. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG533209306
Dimensions8.34 × 6.26 × 4.13 mm
L/W Ratio1.33
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
8.34 mm6.26 mm1.81 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG533209306
Side View
Table 64.0%Crown 41.9°Girdle: MediumPavilion 35°Culet: NoneDepth 66.0%

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: Nov 1
Current: $2,132 AUD|Low: $343 AUD|High: $2,157 AUD|Avg: $1,097 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8$480 AUD
Retailer 7$532 AUD
Retailer 5$804 AUD
Retailer 6$870 AUD
Retailer 2$937 AUD
Retailer 10$975 AUD
Retailer 9$1,025 AUD
Retailer 4$1,634 AUD
Retailer 3$1,651 AUD
MOH London$2,132 AUD

42 data points across 10 retailers

13 retailers$480 AUD to $2,132 AUD

Retailer 1
-
$411 AUD
$289 USD
Price last confirmed 30 days ago
A
Retailer 2
-
$480 AUD
$337 USD
View
Final sale: no returns
Retailer 3
-
$498 AUD
$350 USD
View
Price last confirmed 35 days ago
Retailer 4
-
$532 AUD
$374 USD
View
Price last confirmed 29 days ago
A
Retailer 5
-
$804 AUD
$565 USD
View
B+
Retailer 6
-
$870 AUD
$611 USD
View
A
Retailer 7
-
$937 AUD
£518 GBP
View
B+
Retailer 8
-
$975 AUD
$685 USD
View
B+
Retailer 9
-
$1,025 AUD
$720 USD
View
B
Retailer 10
-
$1,634 AUD
$1,148 USD
View
B
Retailer 11
-
$1,651 AUD
$1,160 USD
View
Retailer 12
-
$1,710 AUD
$1,201 USD
View
Price last confirmed 32 days ago
Most Expensive
B
MOH London
LG533209306 · Nov 1
$2,132 AUD
£1,179 GBP
View
12 more retailers have this diamond
Prices start from $480 AUDSave up to $1,652 AUD

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
$480 AUD