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Radiant|Lab Grown|IGI

1.05ct G SI1 Radiant Lab Grown Diamond

EX • G/SI1 • IGI LG640485751

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

Certificate IGI LG640485751

Diamond specifications and retailer prices

From £312 GBP
As of November 5, 2026
Save £48 GBP (13%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £360 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG640485751 or 640485751. Listed at 2 retailers as of November 5, 2026, with prices from £312 to £360, a £48 spread on the same certified stone. MD Diamonds and Jewellers lists it at £360. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.6°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640485751
Dimensions7.06 × 5.01 × 3.38 mm
L/W Ratio1.41
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.06 mm5.01 mm1.05 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640485751
Side View
Table 65.0%Crown 45.6°Girdle: MED-STKPavilion 34.6°Culet: NoneDepth 67.5%

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: £360 GBP|Low: £312 GBP|High: £360 GBP|Avg: £350 GBP
MD Diamonds and Jewellers
Retailer 2
September 26, 2026
Retailer 2£312 GBP
MD Diamonds and Jewellers£360 GBP

4 data points across 2 retailers

2 retailers£312 GBP to £360 GBP

B+
Cheapest Retailer
-
£312 GBP
Most Expensive
B
MD Diamonds and Jewellers
LG640485751 · Nov 5
£360 GBP
View
1 more retailer has this diamond
Prices start from £312 GBPSave up to £48 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
£312 GBP