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Round|Lab Grown|IGI

3.94ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG818654313

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818654313

Diamond specifications and retailer prices

From £1,587 GBP
$2,127 USD
As of October 29, 2026
Save £8,690 GBP (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £10,277 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.94ct lab-grown round diamond

This 3.94ct 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 LG818654313 or 818654313. Listed at 19 retailers as of October 29, 2026, with prices from £1,587 to £10,277, a £8,690 spread on the same certified stone. Brilliant Earth lists it at £10,277. 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

3.94
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654313
Dimensions10.14 × 10.05 × 6.21 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
10.14 mm10.05 mm3.94 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654313
Side View
Table 58.0%Crown 35.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.5%

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: £10,277 GBP|Low: £1,587 GBP|High: £12,389 GBP|Avg: £4,100 GBP|-17.0%
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 5£1,587 GBP
Retailer 17£1,727 GBP
Retailer 18£1,778 GBP
Retailer 3£1,841 GBP
Retailer 14£1,967 GBP
Retailer 11£2,524 GBP
Retailer 7£2,532 GBP
Retailer 6£2,879 GBP
Retailer 2£2,929 GBP
Retailer 16£2,949 GBP
Retailer 12£4,276 GBP
Retailer 15£4,782 GBP
Retailer 8£4,930 GBP
Retailer 13£5,024 GBP
Retailer 9£6,194 GBP
Retailer 4£6,439 GBP
Retailer 10£6,783 GBP
Brilliant Earth£10,277 GBP

31 data points across 18 retailers

19 retailers£1,587 GBP to £10,277 GBP

A
Cheapest Retailer
-
£1,587 GBP
$2,127 USD
A
Retailer 2
-
£1,727 GBP
$2,314 USD
View
A
Retailer 3
-
£1,778 GBP
$2,382 USD
View
Final sale: no returns
A
Retailer 4
-
£1,841 GBP
$2,467 USD
View
Retailer 5
-
£1,929 GBP
$2,585 USD
View
Price last confirmed 20 days ago
A
Retailer 6
-
£1,967 GBP
$2,635 USD
View
A
Retailer 7
-
£2,524 GBP
View
A
Retailer 8
-
£2,532 GBP
$3,392 USD
View
B+
Retailer 9
-
£2,879 GBP
$3,857 USD
View
B+
Retailer 10
-
£2,929 GBP
€3,738 EUR
View
B+
Retailer 11
-
£2,949 GBP
$3,952 USD
View
B+
Retailer 12
-
£4,276 GBP
ZAR 92,565 ZAR
View
B+
Retailer 13
-
£4,782 GBP
$6,408 USD
View
B+
Retailer 14
-
£4,930 GBP
$6,605 USD
View
B+
Retailer 15
-
£5,024 GBP
View
B+
Retailer 16
-
£6,194 GBP
SGD 11,216 SGD
View
B+
Retailer 17
-
£6,439 GBP
$8,628 USD
View
B+
Retailer 18
-
£6,783 GBP
$9,088 USD
View
Most Expensive
B
Brilliant Earth
21433882A · Oct 30
£10,277 GBP
$13,770 USD
View
18 more retailers have this diamond
Prices start from £1,587 GBPSave up to £8,690 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
3.94ct Round
£1,587 GBP