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Oval|Lab Grown|IGI

3.94ct F VS1 Oval Lab Grown Diamond

ID • F/VS1 • IGI LG840656410

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG840656410

Diamond specifications and retailer prices

From £478 GBP
$641 USD
As of October 29, 2026
Save £4,544 GBP (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £5,023 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.94ct lab-grown oval diamond

This 3.94ct lab-grown oval sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG840656410 or 840656410. Listed at 15 retailers as of October 29, 2026, with prices from £478 to £5,023, a £4,544 spread on the same certified stone. Brilliant Earth lists it at £5,023. 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
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840656410
Dimensions13.14 × 8.69 × 5.55 mm
L/W Ratio1.51
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.14 mm8.69 mm3.94 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840656410
Side View
Table 57.0%Crown 32.3°Girdle: STK-THKPavilion 40.8°Culet: NoneDepth 63.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £5,023 GBP|Low: £459 GBP|High: £5,180 GBP|Avg: £1,607 GBP|-3.0%
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
November 1, 2026
Retailer 13£478 GBP
Retailer 5£650 GBP
Retailer 8£676 GBP
Retailer 4£687 GBP
Retailer 14£905 GBP
Retailer 10£1,253 GBP
Retailer 3£1,316 GBP
Retailer 12£1,417 GBP
Retailer 7£1,559 GBP
Retailer 6£1,871 GBP
Retailer 15£1,968 GBP
Retailer 9£2,006 GBP
Retailer 2£2,336 GBP
Retailer 11£2,426 GBP
Brilliant Earth£5,023 GBP

35 data points across 15 retailers

15 retailers£478 GBP to £5,023 GBP

A
Cheapest Retailer
-
£478 GBP
$641 USD
A
Retailer 2
-
£650 GBP
HK$6,800 HKD
View
A
Retailer 3
-
£676 GBP
View
A
Retailer 4
-
£687 GBP
$920 USD
View
A
Retailer 5
-
£905 GBP
$1,213 USD
View
B+
Retailer 6
-
£1,253 GBP
A$2,582 AUD
View
B+
Retailer 7
-
£1,316 GBP
$1,763 USD
View
B+
Retailer 8
-
£1,417 GBP
$1,898 USD
View
B+
Retailer 9
-
£1,559 GBP
$2,089 USD
View
B
Retailer 10
-
£1,871 GBP
SGD 3,387 SGD
View
B
Retailer 11
-
£1,968 GBP
$2,637 USD
View
B+
Retailer 12
-
£2,006 GBP
A$4,136 AUD
View
B
Retailer 13
-
£2,336 GBP
View
B
Retailer 14
-
£2,426 GBP
$3,250 USD
View
Most Expensive
B
Brilliant Earth
21563387A · Oct 31
£5,023 GBP
$6,730 USD
View
14 more retailers have this diamond
Prices start from £478 GBPSave up to £4,544 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 Oval
£478 GBP