Radiant|Lab Grown|IGI

1.00ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG627471751

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

Certificate IGI LG627471751

Diamond specifications and retailer prices

From £616 GBP
As of October 28, 2026
17 retailers carry this diamond
Most expensive: £1,209 GBP at Brilliant Earth · As of October 1, 2026
View at Brilliant Earth

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 LG627471751 or 627471751. Listed at 17 retailers as of October 28, 2026. 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 angle40.1°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627471751
Dimensions7.27 × 5.20 × 3.25 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
7.27 mm5.20 mm1.00 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627471751
Side View
Table 68.0%Crown 40.1°Girdle: THN-MEDPavilion 34.8°Culet: NoneDepth 62.5%

Caratlytics Score

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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 28
Current: £1,209 GBP|Low: £131 GBP|High: £1,209 GBP|Avg: £532 GBP
Brilliant Earth
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 18, 2026
Retailer 3£131 GBP
Retailer 15£197 GBP
Retailer 16£274 GBP
Retailer 9£281 GBP
Retailer 2£317 GBP
Retailer 12£328 GBP
Retailer 10£403 GBP
Retailer 7£428 GBP
Retailer 4£648 GBP
Retailer 5£655 GBP
Retailer 11£761 GBP
Retailer 14£794 GBP
Retailer 6£841 GBP
Retailer 8£916 GBP
Retailer 13£1,126 GBP
Brilliant Earth£1,209 GBP

32 data points across 16 retailers

17 retailers

A
Retailer 1
-
£123 GBP
$164 USD
Price last confirmed 24 days ago
A
Retailer 2
-
£159 GBP
$212 USD
View
Price last confirmed 24 days ago
B+
Retailer 3
-
£197 GBP
$263 USD
View
Price last confirmed 13 days ago
A
Retailer 4
-
£250 GBP
HK$2,600 HKD
View
Price last confirmed 55 days ago
A
Retailer 5
-
£274 GBP
ZAR 5,902 ZAR
View
Price last confirmed 16 days ago
A
Retailer 6
-
£281 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
£282 GBP
View
Price last confirmed 15 days ago
A
Retailer 8
-
£317 GBP
$422 USD
View
Price last confirmed 10 days ago
A
Retailer 9
-
£403 GBP
$537 USD
View
Price last confirmed 13 days ago
B+
Retailer 10
-
£616 GBP
View
B+
Retailer 11
-
£648 GBP
$863 USD
View
Price last confirmed 14 days ago
B+
Retailer 12
-
£655 GBP
A$1,342 AUD
View
Price last confirmed 21 days ago
B+
Retailer 13
-
£761 GBP
View
Price last confirmed 14 days ago
B
Retailer 14
-
£794 GBP
$1,058 USD
View
Price last confirmed 13 days ago
B
Retailer 15
-
£841 GBP
$1,120 USD
View
Price last confirmed 14 days ago
B
Retailer 16
-
£916 GBP
View
Price last confirmed 22 days ago
Most Expensive
B
Brilliant Earth
14284057Y · Oct 1
£1,209 GBP
$1,610 USD
View
Price last confirmed 28 days ago
16 more retailers have this diamond
Prices start from £616 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
£616 GBP