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Radiant|Lab Grown|IGI

1.40ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG836617734

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

Certificate IGI LG836617734

Diamond specifications and retailer prices

From £340 GBP
$453 USD
As of October 30, 2026
Save £2,025 GBP (86%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,365 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.4ct lab-grown radiant diamond

This 1.4ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836617734 or 836617734. Listed at 14 retailers as of October 29, 2026, with prices from £340 to £2,365, a £2,025 spread on the same certified stone. Brilliant Earth lists it at £2,365. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.40
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836617734
Dimensions7.63 × 5.57 × 3.78 mm
L/W Ratio1.37
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
7.63 mm5.57 mm1.40 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836617734
Side View
Table 66.0%Crown 45.2°Girdle: MED-STKPavilion 36°Culet: NoneDepth 67.9%

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 30
Current: £2,365 GBP|Low: £340 GBP|High: £2,373 GBP|Avg: £943 GBP|-0.3%
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
Retailer 16
October 18, 2026
Retailer 4£340 GBP
Retailer 6£376 GBP
Retailer 13£403 GBP
Retailer 7£488 GBP
Retailer 9£508 GBP
Retailer 3£595 GBP
Retailer 12£615 GBP
Retailer 15£647 GBP
Retailer 16£805 GBP
Retailer 14£971 GBP
Retailer 11£1,009 GBP
Retailer 10£1,141 GBP
Retailer 8£1,236 GBP
Retailer 5£1,489 GBP
Retailer 2£2,178 GBP
Brilliant Earth£2,365 GBP

10 data points across 16 retailers

14 retailers£340 GBP to £2,365 GBP

Retailer 1
-
£291 GBP
$388 USD
Price last confirmed 25 days ago
A
Retailer 2
-
£340 GBP
$453 USD
View
Final sale: no returns
Retailer 3
-
£376 GBP
$501 USD
View
Price last confirmed 27 days ago
Retailer 4
-
£403 GBP
View
Price last confirmed 24 days ago
A
Retailer 5
-
£508 GBP
€644 EUR
View
Retailer 6
-
£595 GBP
$793 USD
View
Price last confirmed 25 days ago
Retailer 7
-
£647 GBP
ZAR 13,921 ZAR
View
Price last confirmed 24 days ago
Retailer 8
-
£971 GBP
$1,293 USD
View
Price last confirmed 24 days ago
B+
Retailer 9
-
£1,009 GBP
SGD 1,815 SGD
View
B
Retailer 10
-
£1,141 GBP
$1,519 USD
View
Retailer 11
-
£1,236 GBP
$1,647 USD
View
Price last confirmed 25 days ago
Retailer 12
-
£1,489 GBP
View
Price last confirmed 26 days ago
Retailer 13
-
£2,178 GBP
$2,900 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
21641065A · Oct 29
£2,365 GBP
$3,150 USD
View
13 more retailers have this diamond
Prices start from £340 GBPSave up to £2,025 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
1.40ct Radiant
£340 GBP