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Emerald|Lab Grown|IGI

1.58ct F SI1 Emerald Lab Grown Diamond

EX • F/SI1 • IGI LG844653633

Shape and cutting style on the report: Emerald cut

Certificate IGI LG844653633

Diamond specifications and retailer prices

From £131 GBP
$176 USD
As of October 30, 2026
Save £657 GBP (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £821 GBP at Brilliant Earth · As of October 22, 2026
View at Brilliant Earth

About this 1.58ct lab-grown emerald diamond

This 1.58ct lab-grown emerald sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG844653633 or 844653633. Listed at 10 retailers as of October 30, 2026, with a 500% 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

1.58
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844653633
Dimensions7.69 × 5.49 × 3.82 mm
L/W Ratio1.40
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.69 mm5.49 mm1.58 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844653633
Side View
Table 61.0%Crown 36.8°Girdle: Slightly ThickPavilion 40.6°Culet: LargeDepth 69.6%

Caratlytics Score

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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: £679 GBP|Low: £131 GBP|High: £788 GBP|Avg: £380 GBP|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 8£131 GBP
Retailer 6£196 GBP
Retailer 2£255 GBP
Retailer 7£262 GBP
Retailer 3£493 GBP
Retailer 4£508 GBP
Retailer 1£679 GBP
Retailer 5£788 GBP

8 data points across 8 retailers

10 retailers£131 GBP to £788 GBP

A
Cheapest Retailer
-
£131 GBP
$176 USD
Final sale: no returns
A
Retailer 2
-
£136 GBP
$182 USD
View
B+
Retailer 3
-
£196 GBP
$262 USD
View
A
Retailer 4
-
£255 GBP
View
A
Retailer 5
-
£262 GBP
View
B+
Retailer 6
-
£493 GBP
$660 USD
View
B+
Retailer 7
-
£508 GBP
$680 USD
View
B
Retailer 8
-
£679 GBP
View
B
Retailer 9
-
£788 GBP
$1,056 USD
View
Most Expensive
Brilliant Earth
21830085A · Oct 22
£821 GBP
$1,100 USD
View
Price last confirmed 10 days ago
9 more retailers have this diamond
Prices start from £131 GBPSave up to £657 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
1.58ct Emerald
£131 GBP