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Round|Lab Grown|IGI

3.90ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG804659326

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804659326

Diamond specifications and retailer prices

From £2,375 GBP
$3,182 USD
As of October 30, 2026
Save £7,708 GBP (76%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £10,083 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.9ct lab-grown round diamond

This 3.9ct 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 LG804659326 or 804659326. Listed at 12 retailers as of October 30, 2026, with prices from £2,375 to £10,083, a £7,708 spread on the same certified stone. Brilliant Earth lists it at £10,083. 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

3.90
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804659326
Dimensions10.12 × 10.06 × 6.19 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
10.12 mm10.06 mm3.90 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804659326
Side View
Table 58.0%Crown 34.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.4%

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: £10,083 GBP|Low: £2,277 GBP|High: £12,531 GBP|Avg: £5,082 GBP|-19.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 9£2,375 GBP
Retailer 4£2,866 GBP
Retailer 3£3,041 GBP
Retailer 5£3,148 GBP
Retailer 8£3,530 GBP
Retailer 2£3,740 GBP
Retailer 11£4,050 GBP
Retailer 7£5,019 GBP
Retailer 10£6,147 GBP
Retailer 6£6,299 GBP
Retailer 12£8,897 GBP
Brilliant Earth£10,083 GBP

41 data points across 12 retailers

12 retailers£2,375 GBP to £10,083 GBP

A
Cheapest Retailer
-
£2,375 GBP
$3,182 USD
B+
Retailer 2
-
£2,866 GBP
HK$30,000 HKD
View
B+
Retailer 3
-
£3,041 GBP
$4,075 USD
View
B+
Retailer 4
-
£3,148 GBP
View
B+
Retailer 5
-
£3,530 GBP
$4,730 USD
View
B+
Retailer 6
-
£3,740 GBP
€4,772 EUR
View
B+
Retailer 7
-
£5,019 GBP
$6,725 USD
View
B
Retailer 8
-
£6,147 GBP
$8,237 USD
View
B+
Retailer 9
-
£6,299 GBP
View
B
Retailer 10
-
£8,159 GBP
$10,932 USD
View
B
Retailer 11
-
£9,078 GBP
$12,164 USD
View
Most Expensive
B
Brilliant Earth
20635014A · Oct 30
£10,083 GBP
$13,510 USD
View
11 more retailers have this diamond
Prices start from £2,375 GBPSave up to £7,708 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
3.90ct Round
£2,375 GBP