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Radiant|Lab Grown|IGI

1.05ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG650403968

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

Certificate IGI LG650403968

Diamond specifications and retailer prices

From £318 GBP
As of November 5, 2026
Save £57 GBP (15%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £376 GBP at MD Diamonds and Jewellers · As of November 5, 2026
View at MD Diamonds and Jewellers

About this 1.05ct lab-grown radiant diamond

This 1.05ct lab-grown radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG650403968 or 650403968. Listed at 2 retailers as of November 5, 2026, with prices from £318 to £376, a £57 spread on the same certified stone. MD Diamonds and Jewellers lists it at £376. 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

1.05
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.3°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG650403968
Dimensions7.30 × 5.00 × 3.30 mm
L/W Ratio1.46
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.30 mm5.00 mm1.05 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG650403968
Side View
Table 68.0%Crown 46.3°Girdle: MediumPavilion 35.2°Culet: NoneDepth 66.0%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: £376 GBP|Low: £318 GBP|High: £376 GBP|Avg: £364 GBP
MD Diamonds and Jewellers
Retailer 2
September 26, 2026
Retailer 2£318 GBP
MD Diamonds and Jewellers£376 GBP

4 data points across 2 retailers

2 retailers£318 GBP to £376 GBP

B+
Cheapest Retailer
-
£318 GBP
Most Expensive
B
MD Diamonds and Jewellers
LG650403968 · Nov 5
£376 GBP
View
1 more retailer has this diamond
Prices start from £318 GBPSave up to £57 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+
1.05ct Radiant
£318 GBP