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Radiant|Lab Grown|IGI

3.50ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG772686353

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

Certificate IGI LG772686353

Diamond specifications and retailer prices

From £1,075 GBP
$1,440 USD
As of October 30, 2026
Save £7,605 GBP (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £8,680 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.5ct lab-grown radiant diamond

This 3.5ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG772686353 or 772686353. Listed at 19 retailers as of October 29, 2026, with prices from £1,075 to £8,680, a £7,605 spread on the same certified stone. Brilliant Earth lists it at £8,680. 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

3.50
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.5°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG772686353
Dimensions7.82 × 7.82 × 5.24 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.82 mm7.82 mm3.50 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG772686353
Side View
Table 67.0%Crown 43.5°Girdle: MediumPavilion 36.5°Culet: NoneDepth 67.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £8,680 GBP|Low: £867 GBP|High: £238,396 GBP|Avg: £9,666 GBP|-2.9%
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
Retailer 17
Retailer 18
October 30, 2026
Retailer 12£1,075 GBP
Retailer 16£1,161 GBP
Retailer 7£1,230 GBP
Retailer 6£1,474 GBP
Retailer 2£1,495 GBP
Retailer 14£1,638 GBP
Retailer 10£1,852 GBP
Retailer 15£2,325 GBP
Retailer 11£2,393 GBP
Retailer 13£2,491 GBP
Retailer 4£2,956 GBP
Retailer 17£3,076 GBP
Retailer 18£3,249 GBP
Retailer 3£3,328 GBP
Retailer 5£3,610 GBP
Retailer 8£4,301 GBP
Retailer 9£4,620 GBP
Brilliant Earth£8,680 GBP

29 data points across 18 retailers

19 retailers£1,075 GBP to £8,680 GBP

A
Cheapest Retailer
-
£1,075 GBP
$1,440 USD
Final sale: no returns
A
Retailer 2
-
£1,161 GBP
$1,555 USD
View
A
Retailer 3
-
£1,230 GBP
$1,648 USD
View
A
Retailer 4
-
£1,474 GBP
$1,975 USD
View
A
Retailer 5
-
£1,495 GBP
View
A
Retailer 6
-
£1,638 GBP
€2,090 EUR
View
Price last confirmed 7 days ago
A
Retailer 7
-
£1,852 GBP
$2,482 USD
View
Retailer 8
-
£2,325 GBP
A$4,792 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
£2,393 GBP
ZAR 51,789 ZAR
View
A
Retailer 10
-
£2,491 GBP
View
B+
Retailer 11
-
£2,852 GBP
$3,822 USD
View
B+
Retailer 12
-
£2,956 GBP
$3,961 USD
View
B+
Retailer 13
-
£3,076 GBP
$4,122 USD
View
B+
Retailer 14
-
£3,249 GBP
$4,353 USD
View
B+
Retailer 15
-
£3,328 GBP
View
B+
Retailer 16
-
£3,610 GBP
$4,837 USD
View
Retailer 17
-
£4,301 GBP
A$8,866 AUD
View
Price last confirmed 21 days ago
Retailer 18
-
£4,620 GBP
$6,190 USD
View
Price last confirmed 16 days ago
Most Expensive
B
Brilliant Earth
18433876A · Oct 29
£8,680 GBP
$11,630 USD
View
18 more retailers have this diamond
Prices start from £1,075 GBPSave up to £7,605 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
3.50ct Radiant
£1,075 GBP