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Radiant|Lab Grown|IGI

4.50ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG613377657

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

Certificate IGI LG613377657

Diamond specifications and retailer prices

From £751 GBP
€958 EUR
As of October 31, 2026
Save £1,005 GBP (57%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,756 GBP at Adiamor · As of October 31, 2026
View at Adiamor

About this 4.5ct lab-grown radiant diamond

This 4.5ct lab-grown radiant sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG613377657 or 613377657. Listed at 6 retailers as of October 31, 2026, with prices from £751 to £1,756, a £1,005 spread on the same certified stone. Adiamor lists it at £1,756. 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

4.50
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG613377657
Dimensions11.97 × 8.12 × 5.35 mm
L/W Ratio1.47
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
11.97 mm8.12 mm4.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG613377657
Side View
Table 64.0%Crown 46°Girdle: MediumPavilion 34.2°Culet: NoneDepth 65.9%

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: £1,756 GBP|Low: £561 GBP|High: £4,426 GBP|Avg: £1,929 GBP|-2.8%
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5£619 GBP
Retailer 2£751 GBP
Retailer 3£1,161 GBP
Retailer 6£1,462 GBP
Adiamor£1,756 GBP
Retailer 4£2,470 GBP
Retailer 8£2,811 GBP
Retailer 7£4,426 GBP

12 data points across 8 retailers

6 retailers£751 GBP to £1,756 GBP

Retailer 1
-
£619 GBP
$830 USD
Price last confirmed 11 days ago
A
Retailer 2
-
£751 GBP
€958 EUR
View
Retailer 3
-
£1,161 GBP
$1,556 USD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
£1,203 GBP
View
B
Retailer 5
-
£1,462 GBP
$1,959 USD
View
Most Expensive
B
Adiamor
D-73418191 · Oct 31
£1,756 GBP
$2,353 USD
View
5 more retailers have this diamond
Prices start from £751 GBPSave up to £1,005 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
4.50ct Radiant
£751 GBP