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Round|Lab Grown|IGI

3.45ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG744514504

Shape and cutting style on the report: Round brilliant

Certificate IGI LG744514504

Diamond specifications and retailer prices

From £957 GBP
$1,282 USD
As of October 29, 2026
Save £5,678 GBP (86%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,635 GBP at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 3.45ct lab-grown round diamond

This 3.45ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG744514504 or 744514504. Listed at 15 retailers as of October 29, 2026, with prices from £957 to £6,635, a £5,678 spread on the same certified stone. Blue Nile lists it at £6,635. 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

3.45
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744514504
Dimensions9.69 × 9.75 × 5.94 mm
L/W Ratio1.01
Girdle conditionFaceted
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
9.69 mm9.75 mm3.45 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744514504
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A+
Exceptional
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 29
Current: £6,635 GBP|Low: £957 GBP|High: £7,216 GBP|Avg: £2,842 GBP|-7.8%
Blue Nile
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 29, 2026
Retailer 10£957 GBP
Retailer 15£1,041 GBP
Retailer 11£1,227 GBP
Retailer 7£1,228 GBP
Retailer 4£1,627 GBP
Retailer 5£1,648 GBP
Retailer 9£1,758 GBP
Retailer 13£2,069 GBP
Retailer 8£2,075 GBP
Retailer 14£2,296 GBP
Retailer 3£2,636 GBP
Retailer 2£3,517 GBP
Retailer 6£6,292 GBP
Retailer 12£6,583 GBP
Blue Nile£6,635 GBP

31 data points across 15 retailers

15 retailers£957 GBP to £6,635 GBP

A+
Cheapest Retailer
-
£957 GBP
$1,282 USD
A
Retailer 2
-
£1,041 GBP
$1,395 USD
View
A
Retailer 3
-
£1,227 GBP
$1,644 USD
View
A
Retailer 4
-
£1,228 GBP
$1,645 USD
View
Final sale: no returns
A
Retailer 5
-
£1,627 GBP
$2,180 USD
View
A
Retailer 6
-
£1,648 GBP
$2,208 USD
View
A
Retailer 7
-
£1,758 GBP
$2,355 USD
View
A
Retailer 8
-
£2,069 GBP
$2,772 USD
View
A
Retailer 9
-
£2,075 GBP
€2,648 EUR
View
A
Retailer 10
-
£2,296 GBP
$3,077 USD
View
B+
Retailer 11
-
£2,636 GBP
$3,532 USD
View
B+
Retailer 12
-
£3,517 GBP
View
B
Retailer 13
-
£6,292 GBP
$8,430 USD
View
B
Retailer 14
-
£6,583 GBP
$8,820 USD
View
Most Expensive
B
Blue Nile
27858157 · Oct 29
£6,635 GBP
$8,890 USD
View
14 more retailers have this diamond
Prices start from £957 GBPSave up to £5,678 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+
3.45ct Round
£957 GBP