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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 £252 GBP
$337 USD
As of October 30, 2026
Save £872 GBP (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,123 GBP 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 £252 to £1,123, a £872 spread on the same certified stone. MOH London lists it at £1,123. 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

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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 30
Current: £1,123 GBP|Low: £180 GBP|High: £1,131 GBP|Avg: £575 GBP|-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£252 GBP
Retailer 7£279 GBP
Retailer 5£422 GBP
Retailer 6£456 GBP
Retailer 2£495 GBP
Retailer 10£511 GBP
Retailer 9£537 GBP
Retailer 4£857 GBP
Retailer 3£866 GBP
MOH London£1,123 GBP

40 data points across 10 retailers

13 retailers£252 GBP to £1,123 GBP

Retailer 1
-
£216 GBP
$289 USD
Price last confirmed 29 days ago
A
Retailer 2
-
£252 GBP
$337 USD
View
Final sale: no returns
Retailer 3
-
£261 GBP
$350 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£279 GBP
$374 USD
View
Price last confirmed 28 days ago
A
Retailer 5
-
£422 GBP
$565 USD
View
A
Retailer 6
-
£456 GBP
$611 USD
View
A
Retailer 7
-
£495 GBP
View
B+
Retailer 8
-
£511 GBP
$685 USD
View
B+
Retailer 9
-
£537 GBP
$720 USD
View
B
Retailer 10
-
£857 GBP
$1,148 USD
View
B
Retailer 11
-
£866 GBP
$1,160 USD
View
Retailer 12
-
£896 GBP
$1,201 USD
View
Price last confirmed 31 days ago
Most Expensive
B
MOH London
LG533209306 · Oct 29
£1,123 GBP
View
12 more retailers have this diamond
Prices start from £252 GBPSave up to £872 GBP

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
£252 GBP