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Radiant|Lab Grown|IGI

1.01ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG585395201

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

Certificate IGI LG585395201

Diamond specifications and retailer prices

From £309 GBP
As of November 5, 2026
Save £91 GBP (23%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £400 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.01ct lab-grown radiant diamond

This 1.01ct 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 LG585395201 or 585395201. Listed at 2 retailers as of November 5, 2026, with prices from £309 to £400, a £91 spread on the same certified stone. Diamond Quarter lists it at £400. 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

1.01
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG585395201
Dimensions6.98 × 4.93 × 3.29 mm
L/W Ratio1.42
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
6.98 mm4.93 mm1.01 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG585395201
Side View
Table 66.0%Crown 38.1°Girdle: Slightly ThickPavilion 35.9°Culet: NoneDepth 66.7%

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: £196 GBP|Low: £196 GBP|High: £717 GBP|Avg: £376 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
March 12, 2026
Retailer 2£196 GBP
Retailer 1£196 GBP
Retailer 3£267 GBP
Retailer 9£309 GBP
Retailer 7£314 GBP
Retailer 8£352 GBP
Retailer 5£421 GBP
Retailer 4£463 GBP
Retailer 6£687 GBP

33 data points across 9 retailers

2 retailers£309 GBP to £400 GBP

B+
Cheapest Retailer
-
£309 GBP
Most Expensive
B
Diamond Quarter
1.01SI1GLG01F20CN · Nov 5
£400 GBP
View
1 more retailer has this diamond
Prices start from £309 GBPSave up to £91 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+
1.01ct Radiant
£309 GBP