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Radiant|Lab Grown|IGI

4.50ct H VS1 Radiant Lab Grown Diamond

EX • H/VS1 • IGI LG671401128

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

Certificate IGI LG671401128

Diamond specifications and retailer prices

From £1,489 GBP
As of October 31, 2026
1 retailer carries this diamond
Only listing: £1,489 GBP at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 4.5ct lab-grown radiant diamond

This 4.5ct lab-grown radiant sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG671401128 or 671401128. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.50
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.7°
Pavilion angle31.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG671401128
Dimensions11.85 × 8.01 × 5.28 mm
L/W Ratio1.48
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.85 mm8.01 mm4.50 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG671401128
Side View
Table 63.0%Crown 47.7°Girdle: MediumPavilion 31.8°CuletDepth 65.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: £1,489 GBP|Low: £1,489 GBP|High: £1,489 GBP|Avg: £1,489 GBP
September 26, 2026
Diamond Quarter£1,489 GBP

1 data point across 1 retailer

1 retailer

B
Diamond Quarter
4.5VS1HLG28956DN · Oct 31
£1,489 GBP
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B
4.50ct Radiant
£1,489 GBP