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Radiant|Lab Grown|IGI

1.61ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG733547001

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

Certificate IGI LG733547001

Diamond specifications and retailer prices

From £335 GBP
€428 EUR
As of October 31, 2026
Save £481 GBP (59%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £816 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.61ct lab-grown radiant diamond

This 1.61ct 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 LG733547001 or 733547001. Listed at 7 retailers as of October 31, 2026, with prices from £335 to £816, a £481 spread on the same certified stone. MOH London lists it at £816. 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

1.61
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle30.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733547001
Dimensions8.92 × 5.75 × 3.57 mm
L/W Ratio1.55
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.92 mm5.75 mm1.61 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG733547001
Side View
Table 63.0%Crown 38.1°Girdle: Slightly ThickPavilion 30.8°Culet: NoneDepth 62.1%

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: £816 GBP|Low: £288 GBP|High: £826 GBP|Avg: £478 GBP|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 3£335 GBP
Retailer 6£348 GBP
Retailer 2£379 GBP
Retailer 7£402 GBP
Retailer 5£452 GBP
Retailer 4£631 GBP
MOH London£816 GBP

33 data points across 7 retailers

7 retailers£335 GBP to £816 GBP

A
Cheapest Retailer
-
£335 GBP
€428 EUR
B+
Retailer 2
-
£348 GBP
$466 USD
View
A
Retailer 3
-
£379 GBP
View
A
Retailer 4
-
£402 GBP
$539 USD
View
B+
Retailer 5
-
£452 GBP
$606 USD
View
Retailer 6
-
£631 GBP
$845 USD
View
Price last confirmed 7 days ago
Most Expensive
B
MOH London
LG733547001 · Nov 1
£816 GBP
View
6 more retailers have this diamond
Prices start from £335 GBPSave up to £481 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
1.61ct Radiant
£335 GBP