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Radiant|Lab Grown|IGI

2.78ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG7506164040

Certificate IGI LG7506164040

Diamond specifications and retailer prices

From £6,886 GBP
$9,170 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £6,886 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 2.78ct lab-grown radiant diamond

This 2.78ct lab-grown radiant sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG7506164040 or 7506164040. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.78
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG7506164040
Dimensions9.93 × 7.08 × 4.61 mm
L/W Ratio1.40
Girdle conditionPolished
Culet sizeNone
Top View
9.93 mm7.08 mm2.78 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG7506164040
Side View
Table 64.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 65.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £6,886 GBP|Low: £5,677 GBP|High: £8,463 GBP|Avg: £7,300 GBP|-18.6%
October 11, 2026
Brilliant Earth£6,886 GBP

32 data points across 1 retailer

1 retailer

B
Brilliant Earth
16506866A · Oct 29
£6,886 GBP
$9,170 USD
View

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B
2.78ct Radiant
£6,886 GBP