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Radiant|Lab Grown|IGI

1.15ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG640446935

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

Certificate IGI LG640446935

Diamond specifications and retailer prices

From £183 GBP
$245 USD
As of October 30, 2026
Save £1,243 GBP (87%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,425 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.15ct lab-grown radiant diamond

This 1.15ct 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 LG640446935 or 640446935. Listed at 21 retailers as of October 30, 2026, with prices from £183 to £1,425, a £1,243 spread on the same certified stone. Brilliant Earth lists it at £1,425. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.15
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
Pavilion angle32.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640446935
Dimensions7.88 × 4.96 × 3.29 mm
L/W Ratio1.59
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.88 mm4.96 mm1.15 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640446935
Side View
Table 63.0%Crown 40.3°Girdle: MediumPavilion 32.6°Culet: NoneDepth 66.3%

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 30
Current: £1,425 GBP|Low: £175 GBP|High: £1,649 GBP|Avg: £536 GBP|-13.6%
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 31, 2026
Retailer 3£183 GBP
Retailer 8£204 GBP
Retailer 6£212 GBP
Retailer 4£227 GBP
Retailer 7£227 GBP
Retailer 16£317 GBP
Retailer 2£374 GBP
Retailer 12£390 GBP
Retailer 9£431 GBP
Retailer 13£553 GBP
Retailer 14£593 GBP
Retailer 5£729 GBP
Retailer 10£752 GBP
Retailer 11£914 GBP
Retailer 15£996 GBP
Brilliant Earth£1,425 GBP

43 data points across 16 retailers

21 retailers£183 GBP to £1,425 GBP

A
Cheapest Retailer
-
£183 GBP
$245 USD
A
Retailer 2
-
£204 GBP
$274 USD
View
Final sale: no returns
A
Retailer 3
-
£212 GBP
$284 USD
View
A
Retailer 4
-
£227 GBP
$304 USD
View
A
Retailer 5
-
£227 GBP
$304 USD
View
A
Retailer 6
-
£317 GBP
$425 USD
View
A
Retailer 7
-
£374 GBP
€477 EUR
View
A
Retailer 8
-
£390 GBP
ZAR 8,433 ZAR
View
A
Retailer 9
-
£428 GBP
$573 USD
View
A
Retailer 10
-
£431 GBP
View
B+
Retailer 11
-
£553 GBP
A$1,140 AUD
View
B+
Retailer 12
-
£593 GBP
$794 USD
View
B+
Retailer 13
-
£729 GBP
$977 USD
View
Retailer 14
-
£731 GBP
$980 USD
View
Price last confirmed 16 days ago
B+
Retailer 15
-
£752 GBP
A$1,551 AUD
View
B+
Retailer 16
-
£768 GBP
$1,029 USD
View
B+
Retailer 17
-
£823 GBP
$1,103 USD
View
B+
Retailer 18
-
£914 GBP
View
Retailer 19
-
£996 GBP
$1,335 USD
View
Price last confirmed 13 days ago
B
Retailer 20
-
£998 GBP
$1,337 USD
View
Most Expensive
B
Brilliant Earth
14080924A · Oct 30
£1,425 GBP
$1,910 USD
View
20 more retailers have this diamond
Prices start from £183 GBPSave up to £1,243 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
1.15ct Radiant
£183 GBP