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Emerald|Lab Grown|IGI

3.90ct G VS1 Emerald Lab Grown Diamond

ID • G/VS1 • IGI LG604380856

Shape and cutting style on the report: Emerald cut

Certificate IGI LG604380856

Diamond specifications and retailer prices

From £337 GBP
$452 USD
As of October 30, 2026
Save £2,260 GBP (87%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,597 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.9ct lab-grown emerald diamond

This 3.9ct lab-grown emerald sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG604380856 or 604380856. Listed at 18 retailers as of October 30, 2026, with prices from £337 to £2,597, a £2,260 spread on the same certified stone. Brilliant Earth lists it at £2,597. 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
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG604380856
Dimensions10.36 × 7.40 × 5.04 mm
L/W Ratio1.40
Culet sizeLong
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.36 mm7.40 mm3.90 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG604380856
Side View
Table 64.0%Crown 35.4°Girdle: MediumPavilion 39°Culet: LNGDepth 68.1%

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: £2,597 GBP|Low: £324 GBP|High: £3,635 GBP|Avg: £1,013 GBP|-28.5%
Brilliant Earth
Retailer 2
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Retailer 19
October 30, 2026
Retailer 8£337 GBP
Retailer 17£378 GBP
Retailer 4£418 GBP
Retailer 19£418 GBP
Retailer 9£431 GBP
Retailer 5£655 GBP
Retailer 16£657 GBP
Retailer 13£659 GBP
Retailer 2£692 GBP
Retailer 3£722 GBP
Retailer 12£883 GBP
Retailer 15£908 GBP
Retailer 11£1,080 GBP
Retailer 18£1,124 GBP
Retailer 7£1,344 GBP
Retailer 6£1,368 GBP
Retailer 14£1,544 GBP
Retailer 10£1,565 GBP
Brilliant Earth£2,597 GBP

38 data points across 19 retailers

18 retailers£337 GBP to £2,597 GBP

A
Cheapest Retailer
-
£337 GBP
$452 USD
A
Retailer 2
-
£378 GBP
$506 USD
View
A
Retailer 3
-
£418 GBP
$560 USD
View
Retailer 4
-
£418 GBP
$560 USD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
£655 GBP
$877 USD
View
A
Retailer 6
-
£657 GBP
$880 USD
View
A
Retailer 7
-
£659 GBP
€841 EUR
View
A
Retailer 8
-
£692 GBP
View
A
Retailer 9
-
£722 GBP
$968 USD
View
A
Retailer 10
-
£883 GBP
A$1,821 AUD
View
A
Retailer 11
-
£908 GBP
ZAR 19,650 ZAR
View
A
Retailer 12
-
£1,080 GBP
$1,447 USD
View
B+
Retailer 13
-
£1,124 GBP
$1,506 USD
View
B+
Retailer 14
-
£1,344 GBP
$1,801 USD
View
B+
Retailer 15
-
£1,368 GBP
$1,833 USD
View
B+
Retailer 16
-
£1,544 GBP
View
B+
Retailer 17
-
£1,565 GBP
$2,097 USD
View
Most Expensive
B
Brilliant Earth
8376478A · Oct 30
£2,597 GBP
$3,480 USD
View
17 more retailers have this diamond
Prices start from £337 GBPSave up to £2,260 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 Emerald
£337 GBP