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Radiant|Lab Grown|IGI

1.00ct H VS1 Radiant Lab Grown Diamond

H/VS1 • IGI LG621498640

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

Certificate IGI LG621498640

Diamond specifications and retailer prices

From £293 GBP
As of October 31, 2026
Save £46 GBP (14%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £339 GBP at MD Diamonds and Jewellers · As of October 29, 2026
View at MD Diamonds and Jewellers

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included) and certified by IGI LG621498640 or 621498640. Listed at 2 retailers as of October 29, 2026, with prices from £293 to £339, a £46 spread on the same certified stone. MD Diamonds and Jewellers lists it at £339. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
H
Colour
VS1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.1°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621498640
Dimensions7.12 × 4.96 × 3.36 mm
L/W Ratio1.44
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
7.12 mm4.96 mm1.00 ctH / VS1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621498640
Side View
Table 66.0%Crown 46.1°Girdle: MediumPavilion 35.7°Culet: NoneDepth 67.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: £339 GBP|Low: £339 GBP|High: £339 GBP|Avg: £339 GBP
December 30, 2025
MD Diamonds and Jewellers£339 GBP

3 data points across 1 retailer

2 retailers£293 GBP to £339 GBP

B+
Cheapest Retailer
-
£293 GBP
Most Expensive
B
MD Diamonds and Jewellers
LG621498640 · Oct 29
£339 GBP
View
1 more retailer has this diamond
Prices start from £293 GBPSave up to £46 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.

B+
1.00ct Radiant
£293 GBP