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Emerald|Lab Grown|IGI

1.74ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG519244921

Shape and cutting style on the report: Emerald cut

Certificate IGI LG519244921

Diamond specifications and retailer prices

From £253 GBP
$337 USD
As of October 28, 2026
Save £290 GBP (53%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,645 GBP at Brilliant Earth · As of October 20, 2026
View at Brilliant Earth

About this 1.74ct lab-grown emerald diamond

This 1.74ct lab-grown emerald sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG519244921 or 519244921. Listed at 3 retailers as of October 23, 2026, with a 115% 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

1.74
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle28.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG519244921
Dimensions8.01 × 5.72 × 3.78 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
8.01 mm5.72 mm1.74 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG519244921
Side View
Table 63.5%Crown 28.8°Girdle: MediumPavilion 40.6°Culet: LNGDepth 66.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £1,645 GBP|Low: £133 GBP|High: £1,697 GBP|Avg: £679 GBP|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 18, 2026
Retailer 5£133 GBP
Retailer 4£253 GBP
Retailer 10£279 GBP
Retailer 9£376 GBP
Retailer 3£431 GBP
Retailer 7£463 GBP
Retailer 2£543 GBP
Retailer 8£858 GBP
Retailer 11£900 GBP
Retailer 6£1,599 GBP
Brilliant Earth£1,645 GBP

6 data points across 11 retailers

3 retailers£253 GBP to £543 GBP

B+
Cheapest Retailer
-
£253 GBP
$337 USD
B
Retailer 2
-
£543 GBP
$723 USD
View
Most Expensive
B
Brilliant Earth
21036761A · Oct 20
£1,645 GBP
$2,190 USD
View
Price last confirmed 9 days ago
2 more retailers have this diamond
Prices start from £253 GBPSave up to £290 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.

B+
1.74ct Emerald
£253 GBP