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Emerald|Lab Grown|IGI

1.21ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG598309898

Shape and cutting style on the report: Emerald cut

Certificate IGI LG598309898

Diamond specifications and retailer prices

From £120 GBP
$161 USD
As of October 27, 2026
Save £1,037 GBP (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,157 GBP at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown emerald diamond

This 1.21ct 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 LG598309898 or 598309898. Listed at 9 retailers as of October 27, 2026, with prices from £120 to £1,157, a £1,037 spread on the same certified stone. Do Amore Diamonds lists it at £1,157. 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

1.21
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598309898
Dimensions7.35 × 4.94 × 3.25 mm
L/W Ratio1.49
Culet sizeLarge
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
7.35 mm4.94 mm1.21 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598309898
Side View
Table 64.0%Crown 33.4°Girdle: MediumPavilion 40.9°Culet: LargeDepth 65.8%

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 27
Current: £1,157 GBP|Low: £116 GBP|High: £1,164 GBP|Avg: £475 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 25, 2026
Retailer 5£120 GBP
Retailer 10£136 GBP
Retailer 3£140 GBP
Retailer 7£270 GBP
Retailer 9£500 GBP
Retailer 4£506 GBP
Retailer 6£529 GBP
Retailer 8£546 GBP
Retailer 2£771 GBP
Do Amore Diamonds£1,157 GBP

22 data points across 10 retailers

9 retailers£120 GBP to £1,157 GBP

A
Cheapest Retailer
-
£120 GBP
$161 USD
A
Retailer 2
-
£140 GBP
$187 USD
View
B+
Retailer 3
-
£270 GBP
$362 USD
View
B
Retailer 4
-
£500 GBP
$670 USD
View
B+
Retailer 5
-
£506 GBP
$678 USD
View
B
Retailer 6
-
£529 GBP
$709 USD
View
B
Retailer 7
-
£546 GBP
$732 USD
View
B
Retailer 8
-
£771 GBP
View
Most Expensive
B
Do Amore Diamonds
27-0A4E49318 · Oct 27
£1,157 GBP
$1,550 USD
View
8 more retailers have this diamond
Prices start from £120 GBPSave up to £1,037 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
1.21ct Emerald
£120 GBP