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Emerald|Lab Grown|GIA

4.20ct G VS2 Emerald Lab Grown Diamond

VG • G/VS2

Diamond specifications and retailer prices

From £679 GBP
$910 USD
As of October 30, 2026
Save £2,096 GBP (76%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,775 GBP at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 4.2ct lab-grown emerald diamond

This 4.2ct lab-grown emerald sits in the three to five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 4 retailers as of October 29, 2026, with prices from £679 to £2,775, a £2,096 spread on the same certified stone. Blue Nile lists it at £2,775. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.20
Carat
G
Colour
VS2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions10.96 × 7.47 × 0.00 mm
L/W Ratio1.47
Top View
10.96 mm7.47 mm4.20 ctG / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 64.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.3%

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: Oct 30
Current: £2,775 GBP|Low: £679 GBP|High: £2,826 GBP|Avg: £1,493 GBP
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 3£679 GBP
Retailer 4£739 GBP
Retailer 2£882 GBP
Retailer 5£1,753 GBP
Retailer 6£2,184 GBP
Blue Nile£2,775 GBP

22 data points across 6 retailers

4 retailers£679 GBP to £2,775 GBP

A
Cheapest Retailer
-
£679 GBP
$910 USD
A
Retailer 2
-
£739 GBP
$990 USD
View
A
Retailer 3
-
£882 GBP
View
Most Expensive
B
Blue Nile
20607289 · Oct 29
£2,775 GBP
$3,718 USD
View
3 more retailers have this diamond
Prices start from £679 GBPSave up to £2,096 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
4.20ct Emerald
£679 GBP