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Radiant|Lab Grown|IGI

1.05ct E FL Radiant Lab Grown Diamond

EX • E/FL • IGI LG835670890

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

Certificate IGI LG835670890

Diamond specifications and retailer prices

From £378 GBP
$504 USD
As of October 29, 2026
Save £1,274 GBP (77%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,652 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.05ct lab-grown radiant diamond

This 1.05ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG835670890 or 835670890. Listed at 15 retailers as of October 29, 2026, with prices from £378 to £1,652, a £1,274 spread on the same certified stone. Brilliant Earth lists it at £1,652. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835670890
Dimensions7.30 × 5.10 × 3.30 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
7.30 mm5.10 mm1.05 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835670890
Side View
Table 65.0%Crown 40.1°Girdle: MED-STKPavilion 35.8°Culet: NoneDepth 64.7%

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 29
Current: £1,652 GBP|Low: £290 GBP|High: £1,675 GBP|Avg: £706 GBP|-1.3%
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
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Retailer 18
October 8, 2026
Retailer 4£290 GBP
Retailer 15£312 GBP
Retailer 13£378 GBP
Retailer 3£409 GBP
Retailer 16£450 GBP
Retailer 14£464 GBP
Retailer 10£493 GBP
Retailer 17£498 GBP
Retailer 5£513 GBP
Retailer 6£546 GBP
Retailer 12£624 GBP
Retailer 8£972 GBP
Retailer 9£1,027 GBP
Retailer 2£1,030 GBP
Retailer 18£1,168 GBP
Retailer 7£1,184 GBP
Retailer 11£1,216 GBP
Brilliant Earth£1,652 GBP

12 data points across 18 retailers

15 retailers£378 GBP to £1,652 GBP

A
Retailer 1
-
£226 GBP
$301 USD
Price last confirmed 27 days ago
A
Retailer 2
-
£288 GBP
$384 USD
View
Price last confirmed 30 days ago
A
Retailer 3
-
£312 GBP
View
Price last confirmed 26 days ago
A
Retailer 4
-
£378 GBP
$504 USD
View
B+
Retailer 5
-
£464 GBP
$618 USD
View
B+
Retailer 6
-
£498 GBP
ZAR 10,715 ZAR
View
Price last confirmed 27 days ago
B+
Retailer 7
-
£546 GBP
$727 USD
View
Price last confirmed 26 days ago
B+
Retailer 8
-
£624 GBP
$832 USD
View
B
Retailer 9
-
£938 GBP
$1,249 USD
View
Price last confirmed 29 days ago
B
Retailer 10
-
£972 GBP
$1,295 USD
View
Price last confirmed 27 days ago
B
Retailer 11
-
£1,030 GBP
CA$1,905 CAD
View
B
Retailer 12
-
£1,168 GBP
$1,555 USD
View
Price last confirmed 27 days ago
B
Retailer 13
-
£1,184 GBP
View
Price last confirmed 28 days ago
B
Retailer 14
-
£1,216 GBP
$1,619 USD
View
Most Expensive
B
Brilliant Earth
21717750A · Oct 29
£1,652 GBP
$2,200 USD
View
14 more retailers have this diamond
Prices start from £378 GBPSave up to £1,274 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
1.05ct Radiant
£378 GBP