Emerald|Lab Grown|IGI

1.50ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG675546652

Shape and cutting style on the report: Emerald cut

Certificate IGI LG675546652

Diamond specifications and retailer prices

From £158 GBP
As of November 4, 2026
Save £664 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £988 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 1.5ct lab-grown emerald diamond

This 1.5ct 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 LG675546652 or 675546652. Listed at 14 retailers as of November 2, 2026, with a 420% 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

1.50
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.9°
Pavilion angle42.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG675546652
Dimensions7.60 × 5.37 × 3.78 mm
L/W Ratio1.42
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.60 mm5.37 mm1.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG675546652
Side View
Table 71.0%Crown 37.9°Girdle: MediumPavilion 42.4°Culet: LargeDepth 70.4%

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: Nov 4
Current: £988 GBP|Low: £158 GBP|High: £1,077 GBP|Avg: £508 GBP|-8.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£158 GBP
Retailer 4£299 GBP
Retailer 7£308 GBP
Retailer 2£317 GBP
Retailer 8£423 GBP
Retailer 5£568 GBP
Retailer 3£822 GBP
Brilliant Earth£988 GBP

44 data points across 8 retailers

14 retailers£158 GBP to £822 GBP

Retailer 1
-
£142 GBP
Price last confirmed 26 days ago
A
Retailer 2
-
£158 GBP
View
Final sale: no returns
Retailer 3
-
£165 GBP
View
Price last confirmed 24 days ago
Retailer 4
-
£176 GBP
View
Price last confirmed 34 days ago
Retailer 5
-
£176 GBP
View
Price last confirmed 25 days ago
Retailer 6
-
£299 GBP
View
Price last confirmed 10 days ago
B+
Retailer 7
-
£308 GBP
View
A
Retailer 8
-
£317 GBP
View
B+
Retailer 9
-
£423 GBP
View
Retailer 10
-
£566 GBP
View
Price last confirmed 30 days ago
B
Retailer 11
-
£568 GBP
View
B
Retailer 12
-
£606 GBP
View
B
Retailer 13
-
£822 GBP
View
Most Expensive
Brilliant Earth
16592142A · Oct 26
£988 GBP
$1,330 USD
View
Price last confirmed 10 days ago
13 more retailers have this diamond
Prices start from £158 GBPSave up to £664 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
1.50ct Emerald
£158 GBP