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Emerald|Lab Grown|IGI

3.91ct F VS1 Emerald Lab Grown Diamond

EX • F/VS1 • IGI LG833662936

Shape and cutting style on the report: Emerald cut

Certificate IGI LG833662936

Diamond specifications and retailer prices

From £387 GBP
$519 USD
As of November 1, 2026
Save £1,617 GBP (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,489 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 3.91ct lab-grown emerald diamond

This 3.91ct lab-grown emerald 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 LG833662936 or 833662936. Listed at 21 retailers as of November 1, 2026, with a 418% 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

3.91
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle42.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833662936
Dimensions10.50 × 7.44 × 5.06 mm
L/W Ratio1.41
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.50 mm7.44 mm3.91 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833662936
Side View
Table 64.0%Crown 37.6°Girdle: Slightly ThickPavilion 42.9°Culet: LargeDepth 68.0%

Caratlytics Score

How it works →
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: Nov 1
Current: £2,489 GBP|Low: £372 GBP|High: £2,515 GBP|Avg: £1,161 GBP|-1.0%
Rare Carat
Retailer 2
Retailer 3
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Retailer 8
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Retailer 11
Retailer 12
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Retailer 19
November 1, 2026
Retailer 19£387 GBP
Retailer 4£480 GBP
Retailer 11£535 GBP
Retailer 13£582 GBP
Retailer 18£643 GBP
Retailer 15£723 GBP
Retailer 12£744 GBP
Retailer 14£1,014 GBP
Retailer 16£1,033 GBP
Retailer 17£1,117 GBP
Retailer 9£1,250 GBP
Retailer 6£1,263 GBP
Retailer 3£1,399 GBP
Retailer 8£1,546 GBP
Retailer 7£1,550 GBP
Retailer 10£1,561 GBP
Retailer 5£1,781 GBP
Retailer 2£2,005 GBP
Rare Carat£2,489 GBP

43 data points across 19 retailers

21 retailers£387 GBP to £2,005 GBP

A
Cheapest Retailer
-
£387 GBP
$519 USD
Retailer 2
-
£474 GBP
$635 USD
View
Price last confirmed 41 days ago
A
Retailer 3
-
£480 GBP
$643 USD
View
Retailer 4
-
£480 GBP
$643 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
£535 GBP
HK$5,600 HKD
View
A
Retailer 6
-
£582 GBP
$780 USD
View
B+
Retailer 7
-
£643 GBP
$862 USD
View
A
Retailer 8
-
£723 GBP
€923 EUR
View
A
Retailer 9
-
£744 GBP
View
A
Retailer 10
-
£1,014 GBP
A$2,090 AUD
View
Retailer 11
-
£1,033 GBP
ZAR 22,362 ZAR
View
Price last confirmed 8 days ago
A
Retailer 12
-
£1,117 GBP
$1,496 USD
View
B+
Retailer 13
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£1,250 GBP
$1,675 USD
View
B+
Retailer 14
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£1,263 GBP
$1,692 USD
View
B+
Retailer 15
-
£1,399 GBP
View
B+
Retailer 16
-
£1,550 GBP
SGD 2,806 SGD
View
B+
Retailer 17
-
£1,561 GBP
$2,092 USD
View
B+
Retailer 18
-
£1,577 GBP
$2,113 USD
View
B+
Retailer 19
-
£1,781 GBP
$2,386 USD
View
B
Retailer 20
-
£2,005 GBP
View
Most Expensive
Rare Carat
ISA-CBF56403 · Oct 18
£2,489 GBP
$3,335 USD
View
Price last confirmed 14 days ago
20 more retailers have this diamond
Prices start from £387 GBPSave up to £1,617 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
3.91ct Emerald
£387 GBP