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Radiant|Lab Grown|IGI

1.00ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG668427826

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

Certificate IGI LG668427826

Diamond specifications and retailer prices

From £183 GBP
$244 USD
As of October 27, 2026
Save £1,574 GBP (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,757 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1ct lab-grown radiant diamond

This 1ct 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 LG668427826 or 668427826. Listed at 22 retailers as of October 27, 2026, with prices from £183 to £1,757, a £1,574 spread on the same certified stone. Do Amore Diamonds lists it at £1,757. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668427826
Dimensions7.09 × 4.88 × 3.28 mm
L/W Ratio1.45
Culet sizePointed
Top View
7.09 mm4.88 mm1.00 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668427826
Side View
Table 66.0%Crown 43.3°Girdle: MediumPavilion 34.3°Culet: NoneDepth 67.2%

Caratlytics Score

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

Price History

Last verified: Oct 27
Current: £441 GBP|Low: £176 GBP|High: £1,472 GBP|Avg: £488 GBP|+3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 29, 2026
Retailer 3£183 GBP
Retailer 5£205 GBP
Retailer 2£213 GBP
Retailer 14£228 GBP
Retailer 16£228 GBP
Retailer 13£267 GBP
Retailer 7£305 GBP
Retailer 8£333 GBP
Retailer 10£431 GBP
Retailer 1£441 GBP
Retailer 9£611 GBP
Retailer 6£698 GBP
Retailer 15£734 GBP
Retailer 4£806 GBP
Retailer 11£1,011 GBP
Retailer 12£1,427 GBP

43 data points across 16 retailers

22 retailers£183 GBP to £1,757 GBP

A
Cheapest Retailer
-
£183 GBP
$244 USD
A
Retailer 2
-
£205 GBP
$273 USD
View
Final sale: no returns
A
Retailer 3
-
£213 GBP
$283 USD
View
A
Retailer 4
-
£228 GBP
$303 USD
View
A
Retailer 5
-
£228 GBP
$303 USD
View
A
Retailer 6
-
£267 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
£305 GBP
$406 USD
View
A
Retailer 8
-
£330 GBP
$440 USD
View
A
Retailer 9
-
£333 GBP
$443 USD
View
A
Retailer 10
-
£431 GBP
ZAR 9,278 ZAR
View
A
Retailer 11
-
£441 GBP
View
B+
Retailer 12
-
£611 GBP
A$1,251 AUD
View
B+
Retailer 13
-
£698 GBP
A$1,430 AUD
View
B+
Retailer 14
-
£734 GBP
$977 USD
View
B+
Retailer 15
-
£806 GBP
$1,074 USD
View
B
Retailer 16
-
£857 GBP
View
B
Retailer 17
-
£933 GBP
$1,242 USD
View
B
Retailer 18
-
£973 GBP
View
B
Retailer 19
-
£1,001 GBP
$1,333 USD
View
B
Retailer 20
-
£1,011 GBP
View
Price last confirmed 10 days ago
B
Retailer 21
-
£1,427 GBP
$1,900 USD
View
Most Expensive
B
Do Amore Diamonds
27-761D7E9D0 · Oct 29
£1,757 GBP
$2,340 USD
View
21 more retailers have this diamond
Prices start from £183 GBPSave up to £1,574 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
1.00ct Radiant
£183 GBP