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Radiant|Lab Grown|IGI

1.40ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG784642060

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

Certificate IGI LG784642060

Diamond specifications and retailer prices

From £244 GBP
$327 USD
As of October 30, 2026
Save £2,107 GBP (90%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,351 GBP at Brilliant Earth · As of October 30, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784642060 or 784642060. Listed at 14 retailers as of October 30, 2026, with prices from £244 to £2,351, a £2,107 spread on the same certified stone. Brilliant Earth lists it at £2,351. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.40
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784642060
Dimensions8.08 × 5.54 × 3.66 mm
L/W Ratio1.46
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
8.08 mm5.54 mm1.40 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784642060
Side View
Table 64.0%Crown 41.9°Girdle: MED-STKPavilion 35.2°Culet: NoneDepth 66.1%

Caratlytics Score

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A+
Exceptional
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: £2,351 GBP|Low: £244 GBP|High: £3,187 GBP|Avg: £1,262 GBP|-26.2%
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
October 30, 2026
Retailer 8£244 GBP
Retailer 14£283 GBP
Retailer 6£357 GBP
Retailer 9£424 GBP
Retailer 4£448 GBP
Retailer 12£490 GBP
Retailer 15£563 GBP
Retailer 5£608 GBP
Retailer 11£887 GBP
Retailer 13£1,073 GBP
Retailer 2£1,312 GBP
Retailer 10£2,164 GBP
Retailer 7£2,295 GBP
Retailer 3£2,317 GBP
Brilliant Earth£2,351 GBP

33 data points across 15 retailers

14 retailers£244 GBP to £2,351 GBP

A+
Cheapest Retailer
-
£244 GBP
$327 USD
A
Retailer 2
-
£283 GBP
$379 USD
View
A
Retailer 3
-
£357 GBP
$478 USD
View
Final sale: no returns
A
Retailer 4
-
£424 GBP
$568 USD
View
A
Retailer 5
-
£448 GBP
$600 USD
View
A
Retailer 6
-
£490 GBP
$657 USD
View
Retailer 7
-
£563 GBP
€719 EUR
View
Price last confirmed 7 days ago
A
Retailer 8
-
£608 GBP
$815 USD
View
B+
Retailer 9
-
£887 GBP
$1,189 USD
View
B+
Retailer 10
-
£1,073 GBP
$1,438 USD
View
B+
Retailer 11
-
£1,312 GBP
View
B
Retailer 12
-
£2,164 GBP
$2,900 USD
View
Retailer 13
-
£2,317 GBP
$3,105 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
19065628Y · Oct 30
£2,351 GBP
$3,150 USD
View
13 more retailers have this diamond
Prices start from £244 GBPSave up to £2,107 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
£244 GBP