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Radiant|Lab Grown|IGI

1.01ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG840630577

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

Certificate IGI LG840630577

Diamond specifications and retailer prices

From £128 GBP
$170 USD
As of October 27, 2026
Save £1,059 GBP (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,186 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 LG840630577 or 840630577. Listed at 22 retailers as of October 27, 2026, with prices from £128 to £1,186, a £1,059 spread on the same certified stone. Brilliant Earth lists it at £1,186. 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 angle40.3°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840630577
Dimensions7.14 × 5.00 × 3.42 mm
L/W Ratio1.43
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
7.14 mm5.00 mm1.01 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840630577
Side View
Table 68.0%Crown 40.3°Girdle: MediumPavilion 37°Culet: NoneDepth 68.4%

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 27
Current: £1,186 GBP|Low: £128 GBP|High: £1,186 GBP|Avg: £456 GBP
Brilliant Earth
Retailer 2
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October 29, 2026
Retailer 3£128 GBP
Retailer 8£143 GBP
Retailer 18£148 GBP
Retailer 6£158 GBP
Retailer 7£158 GBP
Retailer 22£168 GBP
Retailer 13£272 GBP
Retailer 17£278 GBP
Retailer 2£281 GBP
Retailer 11£283 GBP
Retailer 10£339 GBP
Retailer 16£386 GBP
Retailer 20£413 GBP
Retailer 15£440 GBP
Retailer 4£508 GBP
Retailer 12£532 GBP
Retailer 5£537 GBP
Retailer 9£549 GBP
Retailer 21£744 GBP
Retailer 19£849 GBP
Retailer 14£1,178 GBP
Brilliant Earth£1,186 GBP

17 data points across 22 retailers

22 retailers£128 GBP to £1,186 GBP

A
Cheapest Retailer
-
£128 GBP
$170 USD
A
Retailer 2
-
£143 GBP
$190 USD
View
Final sale: no returns
A
Retailer 3
-
£148 GBP
$197 USD
View
A
Retailer 4
-
£158 GBP
$211 USD
View
A
Retailer 5
-
£158 GBP
$211 USD
View
A
Retailer 6
-
£168 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
£272 GBP
ZAR 5,842 ZAR
View
A
Retailer 8
-
£278 GBP
€352 EUR
View
A
Retailer 9
-
£281 GBP
View
A
Retailer 10
-
£283 GBP
$377 USD
View
A
Retailer 11
-
£339 GBP
$452 USD
View
A
Retailer 12
-
£386 GBP
A$790 AUD
View
A
Retailer 13
-
£413 GBP
$550 USD
View
B+
Retailer 14
-
£440 GBP
SGD 792 SGD
View
B+
Retailer 15
-
£508 GBP
$677 USD
View
B+
Retailer 16
-
£532 GBP
$708 USD
View
B+
Retailer 17
-
£537 GBP
$715 USD
View
B+
Retailer 18
-
£549 GBP
$732 USD
View
B
Retailer 19
-
£744 GBP
View
B
Retailer 20
-
£849 GBP
$1,130 USD
View
Price last confirmed 10 days ago
B
Retailer 21
-
£1,178 GBP
$1,569 USD
View
Most Expensive
B
Brilliant Earth
21813859A · Oct 29
£1,186 GBP
$1,580 USD
View
21 more retailers have this diamond
Prices start from £128 GBPSave up to £1,059 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
£128 GBP