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Round|Lab Grown|IGI

1.01ct E I1 Round Lab Grown Diamond

ID • E/I1 • IGI LG620494057

Shape and cutting style on the report: Round brilliant

Certificate IGI LG620494057

Diamond specifications and retailer prices

From £109 GBP
$146 USD
As of October 29, 2026
Save £349 GBP (76%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £458 GBP at Friendly Diamonds · As of October 30, 2026
View at Friendly Diamonds

About this 1.01ct lab-grown round diamond

This 1.01ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI LG620494057 or 620494057. Listed at 9 retailers as of October 29, 2026, with prices from £109 to £458, a £349 spread on the same certified stone. Friendly Diamonds lists it at £458. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.01
Carat
E
Colour
I1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620494057
Dimensions6.41 × 6.44 × 3.99 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.41 mm6.44 mm1.01 ctE / I1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620494057
Side View
Table 58.0%Crown 34.9°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £458 GBP|Low: £109 GBP|High: £458 GBP|Avg: £246 GBP
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 3£109 GBP
Retailer 2£126 GBP
Retailer 9£135 GBP
Retailer 7£153 GBP
Retailer 4£237 GBP
Retailer 6£250 GBP
Retailer 5£317 GBP
Retailer 8£434 GBP
Friendly Diamonds£458 GBP

4 data points across 9 retailers

9 retailers£109 GBP to £458 GBP

A
Cheapest Retailer
-
£109 GBP
$146 USD
A
Retailer 2
-
£126 GBP
$169 USD
View
A
Retailer 3
-
£135 GBP
$181 USD
View
A
Retailer 4
-
£153 GBP
HK$1,600 HKD
View
B+
Retailer 5
-
£237 GBP
€302 EUR
View
B+
Retailer 6
-
£250 GBP
$335 USD
View
B+
Retailer 7
-
£317 GBP
$425 USD
View
B+
Retailer 8
-
£434 GBP
$581 USD
View
Most Expensive
B+
Friendly Diamonds
6559770 · Oct 30
£458 GBP
$614 USD
View
8 more retailers have this diamond
Prices start from £109 GBPSave up to £349 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.

A
1.01ct Round
£109 GBP