CaratHunter
Plans
Round|Lab Grown|IGI

4.09ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG790611940

Shape and cutting style on the report: Round brilliant

Certificate IGI LG790611940

Diamond specifications and retailer prices

From £2,349 GBP
$3,147 USD
As of October 29, 2026
Save £9,234 GBP (80%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £11,583 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.09ct lab-grown round diamond

This 4.09ct 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 LG790611940 or 790611940. Listed at 23 retailers as of October 29, 2026, with prices from £2,349 to £11,583, a £9,234 spread on the same certified stone. Brilliant Earth lists it at £11,583. 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

4.09
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790611940
Dimensions10.30 × 10.38 × 6.33 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.30 mm10.38 mm4.09 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790611940
Side View
Table 57.0%Crown 33.7°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.1%

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 29
Current: £11,583 GBP|Low: £2,255 GBP|High: £13,583 GBP|Avg: £4,623 GBP|-14.7%
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 31, 2026
Retailer 17£2,349 GBP
Retailer 7£2,555 GBP
Retailer 9£2,630 GBP
Retailer 6£2,686 GBP
Retailer 3£2,724 GBP
Retailer 10£2,724 GBP
Retailer 14£2,724 GBP
Retailer 8£3,404 GBP
Retailer 11£3,602 GBP
Retailer 16£3,834 GBP
Retailer 4£4,230 GBP
Retailer 2£4,337 GBP
Retailer 15£5,385 GBP
Retailer 12£5,797 GBP
Retailer 18£6,795 GBP
Retailer 13£6,942 GBP
Retailer 5£9,168 GBP
Brilliant Earth£11,583 GBP

44 data points across 18 retailers

23 retailers£2,349 GBP to £11,583 GBP

A
Cheapest Retailer
-
£2,349 GBP
$3,147 USD
A
Retailer 2
-
£2,555 GBP
$3,423 USD
View
A
Retailer 3
-
£2,630 GBP
$3,524 USD
View
Final sale: no returns
A
Retailer 4
-
£2,686 GBP
$3,599 USD
View
A
Retailer 5
-
£2,724 GBP
$3,650 USD
View
Retailer 6
-
£2,724 GBP
$3,650 USD
View
Price last confirmed 19 days ago
A
Retailer 7
-
£2,724 GBP
$3,650 USD
View
A
Retailer 8
-
£3,172 GBP
HK$33,200 HKD
View
A
Retailer 9
-
£3,353 GBP
$4,493 USD
View
A
Retailer 10
-
£3,404 GBP
$4,561 USD
View
A
Retailer 11
-
£3,602 GBP
View
A
Retailer 12
-
£3,834 GBP
$5,137 USD
View
A
Retailer 13
-
£4,230 GBP
$5,668 USD
View
A
Retailer 14
-
£4,337 GBP
€5,534 EUR
View
Retailer 15
-
£5,385 GBP
$7,215 USD
View
Price last confirmed 13 days ago
B+
Retailer 16
-
£5,797 GBP
ZAR 125,482 ZAR
View
B+
Retailer 17
-
£6,538 GBP
$8,760 USD
View
B+
Retailer 18
-
£6,795 GBP
$9,105 USD
View
B+
Retailer 19
-
£6,942 GBP
View
B+
Retailer 20
-
£7,555 GBP
$10,123 USD
View
B
Retailer 21
-
£9,168 GBP
SGD 16,600 SGD
View
B
Retailer 22
-
£9,511 GBP
$12,743 USD
View
Most Expensive
B
Brilliant Earth
19074416A · Oct 30
£11,583 GBP
$15,520 USD
View
22 more retailers have this diamond
Prices start from £2,349 GBPSave up to £9,234 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
4.09ct Round
£2,349 GBP