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Round|Lab Grown|IGI

4.05ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG780685527

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780685527

Diamond specifications and retailer prices

From £2,253 GBP
As of October 30, 2026
Save £10,040 GBP (82%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £12,292 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.05ct lab-grown round diamond

This 4.05ct 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 LG780685527 or 780685527. Listed at 6 retailers as of October 30, 2026, with prices from £2,253 to £12,292, a £10,040 spread on the same certified stone. Do Amore Diamonds lists it at £12,292. 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

4.05
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780685527
Dimensions10.38 × 10.41 × 6.19 mm
L/W Ratio1.00
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
10.38 mm10.41 mm4.05 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780685527
Side View
Table 58.0%Crown 33.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 59.6%

Caratlytics Score

How it works →
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: £12,292 GBP|Low: £1,434 GBP|High: £15,158 GBP|Avg: £5,994 GBP
Do Amore Diamonds
Retailer 2
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Retailer 17
October 31, 2026
Retailer 4£1,434 GBP
Retailer 10£2,253 GBP
Retailer 5£2,682 GBP
Retailer 13£3,108 GBP
Retailer 2£3,108 GBP
Retailer 15£3,118 GBP
Retailer 12£3,232 GBP
Retailer 7£4,945 GBP
Retailer 17£5,754 GBP
Retailer 16£5,856 GBP
Retailer 8£5,999 GBP
Retailer 11£6,158 GBP
Retailer 6£7,268 GBP
Retailer 3£8,831 GBP
Retailer 9£10,974 GBP
Do Amore Diamonds£12,292 GBP
Retailer 14£15,158 GBP

7 data points across 17 retailers

6 retailers£2,253 GBP to £12,292 GBP

A
Cheapest Retailer
-
£2,253 GBP
A
Retailer 2
-
£3,108 GBP
$4,164 USD
View
A
Retailer 3
-
£3,108 GBP
$4,165 USD
View
A
Retailer 4
-
£3,232 GBP
$4,331 USD
View
B+
Retailer 5
-
£6,158 GBP
View
Most Expensive
B
Do Amore Diamonds
27-5D9B58FE0 · Oct 31
£12,292 GBP
$16,470 USD
View
5 more retailers have this diamond
Prices start from £2,253 GBPSave up to £10,040 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
4.05ct Round
£2,253 GBP