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 $337 USD
As of October 30, 2026
Save $1,168 USD (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,505 USD at MOH London · As of October 29, 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 October 29, 2026, with prices from $337 to $1,505, a $1,168 spread on the same certified stone. MOH London lists it at $1,505. 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
Color
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: Oct 30
Current: $1,505 USD|Low: $241 USD|High: $1,515 USD|Avg: $768 USD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 8$337 USD
Retailer 7$374 USD
Retailer 5$565 USD
Retailer 6$611 USD
Retailer 2$663 USD
Retailer 10$685 USD
Retailer 9$720 USD
Retailer 4$1,148 USD
Retailer 3$1,160 USD
MOH London$1,505 USD

41 data points across 10 retailers

13 retailers$337 USD to $1,505 USD

Retailer 1
-
$289 USD
Price last confirmed 29 days ago
A
Retailer 2
-
$337 USD
View
Final sale: no returns
Retailer 3
-
$350 USD
View
Price last confirmed 33 days ago
Retailer 4
-
$374 USD
View
Price last confirmed 28 days ago
A
Retailer 5
-
$565 USD
View
A
Retailer 6
-
$611 USD
View
A
Retailer 7
-
$663 USD
£522 GBP
View
B+
Retailer 8
-
$685 USD
View
B+
Retailer 9
-
$720 USD
View
B
Retailer 10
-
$1,148 USD
View
B
Retailer 11
-
$1,160 USD
View
Retailer 12
-
$1,201 USD
View
Price last confirmed 30 days ago
Most Expensive
B
MOH London
LG533209306 · Oct 29
$1,505 USD
£1,185 GBP
View
12 more retailers have this diamond
Prices start from $337 USDSave up to $1,168 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 Radiant
$337 USD