Radiant|Lab Grown|IGI

1.01ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG667445231

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

Certificate IGI LG667445231

Diamond specifications and retailer prices

From £120 GBP
$160 USD
As of October 27, 2026
Save £1,323 GBP (92%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,443 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.01ct lab-grown radiant diamond

This 1.01ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG667445231 or 667445231. Listed at 22 retailers as of October 27, 2026, with prices from £120 to £1,443, a £1,323 spread on the same certified stone. Queensmith lists it at £1,443. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG667445231
Dimensions7.07 × 5.05 × 3.39 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.07 mm5.05 mm1.01 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG667445231
Side View
Table 65.0%Crown 41.7°Girdle: MED-STKPavilion 35°Culet: NoneDepth 67.1%

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 27
Current: £1,443 GBP|Low: £119 GBP|High: £1,443 GBP|Avg: £403 GBP
Queensmith
Retailer 2
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October 28, 2026
Retailer 6£120 GBP
Retailer 4£135 GBP
Retailer 14£140 GBP
Retailer 17£149 GBP
Retailer 11£161 GBP
Retailer 5£175 GBP
Retailer 19£203 GBP
Retailer 10£277 GBP
Retailer 2£297 GBP
Retailer 16£323 GBP
Retailer 8£330 GBP
Retailer 13£402 GBP
Retailer 7£408 GBP
Retailer 15£530 GBP
Retailer 12£662 GBP
Retailer 3£665 GBP
Retailer 20£775 GBP
Retailer 9£799 GBP
Retailer 18£1,159 GBP
Queensmith£1,443 GBP

33 data points across 20 retailers

22 retailers£120 GBP to £1,443 GBP

A
Cheapest Retailer
-
£120 GBP
$160 USD
A
Retailer 2
-
£135 GBP
$179 USD
View
Final sale: no returns
A
Retailer 3
-
£140 GBP
$186 USD
View
A
Retailer 4
-
£149 GBP
$198 USD
View
A
Retailer 5
-
£161 GBP
$214 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
£175 GBP
View
Price last confirmed 12 days ago
B+
Retailer 7
-
£203 GBP
$270 USD
View
A
Retailer 8
-
£250 GBP
HK$2,600 HKD
View
Price last confirmed 55 days ago
A
Retailer 9
-
£277 GBP
ZAR 5,951 ZAR
View
Price last confirmed 16 days ago
A
Retailer 10
-
£297 GBP
View
A
Retailer 11
-
£323 GBP
$429 USD
View
A
Retailer 12
-
£402 GBP
A$822 AUD
View
A
Retailer 13
-
£408 GBP
$542 USD
View
Price last confirmed 13 days ago
B+
Retailer 14
-
£530 GBP
$704 USD
View
B+
Retailer 15
-
£608 GBP
View
B+
Retailer 16
-
£662 GBP
A$1,353 AUD
View
Price last confirmed 24 days ago
B+
Retailer 17
-
£665 GBP
$883 USD
View
B+
Retailer 18
-
£700 GBP
View
Price last confirmed 30 days ago
B+
Retailer 19
-
£775 GBP
View
B
Retailer 20
-
£799 GBP
$1,062 USD
View
Price last confirmed 13 days ago
B
Retailer 21
-
£1,159 GBP
$1,540 USD
View
Most Expensive
B
Queensmith
LG667445231 · Oct 27
£1,443 GBP
View
21 more retailers have this diamond
Prices start from £120 GBPSave up to £1,323 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 Radiant
£120 GBP