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Emerald|Lab Grown|IGI

1.20ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG384946599

Shape and cutting style on the report: Emerald cut

Certificate IGI LG384946599

Diamond specifications and retailer prices

From £298 GBP
$399 USD
As of October 30, 2026
Save £269 GBP (48%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £936 GBP at Taylor and Hart · As of October 21, 2026
View at Taylor and Hart

About this 1.2ct lab-grown emerald diamond

This 1.2ct lab-grown emerald sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG384946599 or 384946599. Listed at 5 retailers as of October 29, 2026, with a 90% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG384946599
Dimensions6.96 × 5.16 × 3.53 mm
L/W Ratio1.35
Culet sizeLarge
Cert comments
This laboratory grown diamond is classified as Type II.
Top View
6.96 mm5.16 mm1.20 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG384946599
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: LargeDepth 68.4%

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: £304 GBP|Low: £279 GBP|High: £936 GBP|Avg: £535 GBP|+3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
October 30, 2026
Retailer 4£298 GBP
Retailer 2£299 GBP
Retailer 1£304 GBP
Retailer 6£564 GBP
Retailer 3£567 GBP
Retailer 5£780 GBP
Taylor and Hart£936 GBP

33 data points across 7 retailers

5 retailers£298 GBP to £567 GBP

A
Cheapest Retailer
-
£298 GBP
$399 USD
A
Retailer 2
-
£299 GBP
€382 EUR
View
A
Retailer 3
-
£304 GBP
View
B
Retailer 4
-
£567 GBP
$760 USD
View
Most Expensive
Taylor and Hart
I5LCUAP · Oct 21
£936 GBP
$1,254 USD
View
Price last confirmed 9 days ago
4 more retailers have this diamond
Prices start from £298 GBPSave up to £269 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
1.20ct Emerald
£298 GBP