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Round|Lab Grown|IGI

4.00ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG799638998

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799638998

Diamond specifications and retailer prices

From £2,185 GBP
As of October 30, 2026
Save £9,741 GBP (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £13,285 GBP at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 4ct lab-grown round diamond

This 4ct 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 LG799638998 or 799638998. Listed at 13 retailers as of October 30, 2026, with a 446% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.00
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799638998
Dimensions10.18 × 10.12 × 6.26 mm
L/W Ratio1.01
Girdle conditionFaceted
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
10.18 mm10.12 mm4.00 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799638998
Side View
Table 58.0%Crown 35.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.6%

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: £10,359 GBP|Low: £1,354 GBP|High: £15,762 GBP|Avg: £6,419 GBP|-34.3%
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
October 30, 2026
Retailer 14£1,896 GBP
Retailer 2£2,185 GBP
Retailer 9£3,082 GBP
Retailer 8£3,082 GBP
Retailer 11£3,138 GBP
Retailer 13£4,707 GBP
Retailer 7£5,053 GBP
Retailer 5£5,280 GBP
Retailer 3£5,598 GBP
Retailer 10£5,951 GBP
Retailer 4£7,283 GBP
Brilliant Earth£10,359 GBP
Retailer 12£11,926 GBP
Retailer 6£13,244 GBP

19 data points across 14 retailers

13 retailers£2,185 GBP to £11,926 GBP

Retailer 1
-
£1,860 GBP
$2,492 USD
Price last confirmed 29 days ago
Retailer 2
-
£2,108 GBP
$2,824 USD
View
Price last confirmed 29 days ago
A
Retailer 3
-
£2,185 GBP
View
A
Retailer 4
-
£3,082 GBP
$4,129 USD
View
A
Retailer 5
-
£3,082 GBP
$4,130 USD
View
A
Retailer 6
-
£3,138 GBP
$4,204 USD
View
Retailer 7
-
£3,410 GBP
$4,569 USD
View
Price last confirmed 31 days ago
B+
Retailer 8
-
£4,707 GBP
$6,307 USD
View
B+
Retailer 9
-
£5,053 GBP
$6,770 USD
View
B+
Retailer 10
-
£5,951 GBP
View
B
Retailer 11
-
£10,359 GBP
$13,880 USD
View
B
Retailer 12
-
£11,926 GBP
$15,980 USD
View
Most Expensive
Brilliant Earth
21412100B · Oct 21
£13,285 GBP
$17,800 USD
View
Price last confirmed 10 days ago
12 more retailers have this diamond
Prices start from £2,185 GBPSave up to £9,741 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
4.00ct Round
£2,185 GBP