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Radiant|Lab Grown|IGI

3.51ct E IF Radiant Lab Grown Diamond

VG • E/IF • IGI LG673412609

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

Certificate IGI LG673412609

Diamond specifications and retailer prices

From £950 GBP
$1,273 USD
As of October 30, 2026
Save £5,595 GBP (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £6,545 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.51ct lab-grown radiant diamond

This 3.51ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG673412609 or 673412609. Listed at 23 retailers as of October 30, 2026, with prices from £950 to £6,545, a £5,595 spread on the same certified stone. Brilliant Earth lists it at £6,545. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.51
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.3°
Pavilion angle32.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG673412609
Dimensions10.24 × 7.14 × 5.11 mm
L/W Ratio1.43
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.24 mm7.14 mm3.51 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG673412609
Side View
Table 65.0%Crown 27.3°Girdle: Slightly ThickPavilion 32.4°Culet: NoneDepth 71.6%

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: £6,545 GBP|Low: £912 GBP|High: £8,725 GBP|Avg: £2,496 GBP|-25.0%
Brilliant Earth
Retailer 2
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Retailer 19
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Retailer 21
October 30, 2026
Retailer 20£950 GBP
Retailer 7£1,064 GBP
Retailer 10£1,102 GBP
Retailer 21£1,102 GBP
Retailer 2£1,217 GBP
Retailer 6£1,231 GBP
Retailer 9£1,345 GBP
Retailer 13£1,553 GBP
Retailer 17£1,576 GBP
Retailer 18£1,935 GBP
Retailer 3£2,054 GBP
Retailer 19£2,493 GBP
Retailer 15£2,559 GBP
Retailer 11£2,662 GBP
Retailer 8£3,112 GBP
Retailer 5£3,162 GBP
Retailer 4£3,446 GBP
Retailer 16£3,560 GBP
Retailer 12£3,690 GBP
Retailer 14£3,867 GBP
Brilliant Earth£6,545 GBP

36 data points across 21 retailers

23 retailers£950 GBP to £6,545 GBP

A
Cheapest Retailer
-
£950 GBP
$1,273 USD
A
Retailer 2
-
£1,034 GBP
$1,385 USD
View
A
Retailer 3
-
£1,064 GBP
$1,425 USD
View
Final sale: no returns
A
Retailer 4
-
£1,102 GBP
$1,477 USD
View
Retailer 5
-
£1,102 GBP
$1,477 USD
View
Price last confirmed 18 days ago
A
Retailer 6
-
£1,217 GBP
View
A
Retailer 7
-
£1,231 GBP
$1,650 USD
View
A
Retailer 8
-
£1,345 GBP
$1,802 USD
View
A
Retailer 9
-
£1,553 GBP
View
A
Retailer 10
-
£1,576 GBP
$2,112 USD
View
Retailer 11
-
£1,935 GBP
€2,469 EUR
View
Price last confirmed 7 days ago
A
Retailer 12
-
£2,054 GBP
$2,752 USD
View
A
Retailer 13
-
£2,066 GBP
$2,768 USD
View
Retailer 14
-
£2,493 GBP
A$5,139 AUD
View
Price last confirmed 8 days ago
A
Retailer 15
-
£2,559 GBP
ZAR 55,392 ZAR
View
B+
Retailer 16
-
£2,662 GBP
View
B+
Retailer 17
-
£3,112 GBP
$4,170 USD
View
B+
Retailer 18
-
£3,162 GBP
$4,237 USD
View
B+
Retailer 19
-
£3,446 GBP
$4,617 USD
View
B+
Retailer 20
-
£3,560 GBP
View
B+
Retailer 21
-
£3,690 GBP
SGD 6,681 SGD
View
B+
Retailer 22
-
£3,867 GBP
$5,182 USD
View
Most Expensive
B
Brilliant Earth
21311697A · Oct 30
£6,545 GBP
$8,770 USD
View
22 more retailers have this diamond
Prices start from £950 GBPSave up to £5,595 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
3.51ct Radiant
£950 GBP