Radiant|Lab Grown|IGI

2.66ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG778667127

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

Certificate IGI LG778667127

Diamond specifications and retailer prices

From £740 GBP
$992 USD
As of October 30, 2026
Save £3,148 GBP (81%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £3,888 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.66ct lab-grown radiant diamond

This 2.66ct 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 LG778667127 or 778667127. Listed at 27 retailers as of October 30, 2026, with prices from £740 to £3,888, a £3,148 spread on the same certified stone. Brilliant Earth lists it at £3,888. 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

2.66
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778667127
Dimensions8.09 × 7.41 × 4.83 mm
L/W Ratio1.09
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.09 mm7.41 mm2.66 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778667127
Side View
Table 67.0%Crown 42.6°Girdle: Slightly ThickPavilion 34°Culet: NoneDepth 65.2%

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: £3,888 GBP|Low: £711 GBP|High: £3,888 GBP|Avg: £1,950 GBP
Brilliant Earth
Retailer 2
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November 1, 2026
Retailer 6£740 GBP
Retailer 5£805 GBP
Retailer 9£828 GBP
Retailer 12£858 GBP
Retailer 24£989 GBP
Retailer 4£994 GBP
Retailer 11£1,045 GBP
Retailer 3£1,228 GBP
Retailer 13£1,314 GBP
Retailer 20£1,366 GBP
Retailer 8£1,609 GBP
Retailer 22£1,643 GBP
Retailer 19£2,038 GBP
Retailer 15£2,096 GBP
Retailer 7£2,152 GBP
Retailer 23£2,215 GBP
Retailer 16£2,366 GBP
Retailer 18£2,661 GBP
Retailer 10£2,776 GBP
Retailer 14£2,878 GBP
Retailer 21£2,903 GBP
Retailer 2£2,912 GBP
Retailer 17£2,992 GBP
Brilliant Earth£3,888 GBP

32 data points across 24 retailers

27 retailers£740 GBP to £3,888 GBP

A
Cheapest Retailer
-
£740 GBP
$992 USD
A
Retailer 2
-
£805 GBP
$1,079 USD
View
A
Retailer 3
-
£828 GBP
$1,110 USD
View
Final sale: no returns
A
Retailer 4
-
£858 GBP
$1,150 USD
View
Retailer 5
-
£858 GBP
$1,150 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
£989 GBP
$1,325 USD
View
A
Retailer 7
-
£994 GBP
HK$10,400 HKD
View
A
Retailer 8
-
£1,045 GBP
$1,400 USD
View
A
Retailer 9
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£1,228 GBP
$1,645 USD
View
A
Retailer 10
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£1,314 GBP
View
A
Retailer 11
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£1,366 GBP
€1,743 EUR
View
A
Retailer 12
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£1,609 GBP
$2,156 USD
View
A
Retailer 13
-
£1,643 GBP
$2,201 USD
View
A
Retailer 14
-
£1,687 GBP
$2,261 USD
View
B+
Retailer 15
-
£2,038 GBP
A$4,201 AUD
View
B+
Retailer 16
-
£2,096 GBP
$2,809 USD
View
B+
Retailer 17
-
£2,152 GBP
$2,884 USD
View
B+
Retailer 18
-
£2,215 GBP
ZAR 47,940 ZAR
View
B+
Retailer 19
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£2,366 GBP
View
B+
Retailer 20
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£2,536 GBP
$3,398 USD
View
B+
Retailer 21
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£2,661 GBP
$3,566 USD
View
B+
Retailer 22
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£2,776 GBP
$3,720 USD
View
B+
Retailer 23
-
£2,878 GBP
SGD 5,211 SGD
View
B+
Retailer 24
-
£2,903 GBP
A$5,984 AUD
View
B+
Retailer 25
-
£2,912 GBP
View
B+
Retailer 26
-
£2,992 GBP
$4,009 USD
View
Most Expensive
B
Brilliant Earth
18340359A · Oct 31
£3,888 GBP
$5,210 USD
View
26 more retailers have this diamond
Prices start from £740 GBPSave up to £3,148 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
2.66ct Radiant
£740 GBP