Emerald|Lab Grown|IGI

1.57ct F SI1 Emerald Lab Grown Diamond

ID • F/SI1 • IGI LG496134917

Shape and cutting style on the report: Emerald cut

Certificate IGI LG496134917

Diamond specifications and retailer prices

From £1,294 GBP
$1,734 USD
As of October 30, 2026
Save £1,062 GBP (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,814 GBP at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 1.57ct lab-grown emerald diamond

This 1.57ct 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 LG496134917 or 496134917. Listed at 12 retailers as of October 30, 2026, with a 82% 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

1.57
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle26°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG496134917
Dimensions7.82 × 5.40 × 3.74 mm
L/W Ratio1.45
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
7.82 mm5.40 mm1.57 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG496134917
Side View
Table 63.0%Crown 26°Girdle: MediumPavilion 41.8°Culet: LNGDepth 69.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,814 GBP|Low: £1,243 GBP|High: £4,345 GBP|Avg: £1,993 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7£1,294 GBP
Retailer 8£1,336 GBP
Retailer 12£1,408 GBP
Retailer 3£1,449 GBP
Retailer 9£1,502 GBP
Retailer 11£1,502 GBP
Retailer 4£1,627 GBP
Retailer 2£2,129 GBP
Retailer 10£2,356 GBP
Retailer 6£2,588 GBP
NZ Jewellers£2,814 GBP
Retailer 5£4,311 GBP

42 data points across 12 retailers

12 retailers£1,294 GBP to £2,356 GBP

B
Cheapest Retailer
-
£1,294 GBP
$1,734 USD
B
Retailer 2
-
£1,336 GBP
$1,790 USD
View
B
Retailer 3
-
£1,408 GBP
$1,887 USD
View
B
Retailer 4
-
£1,449 GBP
$1,942 USD
View
Final sale: no returns
B
Retailer 5
-
£1,502 GBP
$2,012 USD
View
Retailer 6
-
£1,502 GBP
$2,012 USD
View
Price last confirmed 20 days ago
B
Retailer 7
-
£1,627 GBP
$2,180 USD
View
B
Retailer 8
-
£2,129 GBP
View
B
Retailer 9
-
£2,356 GBP
$3,157 USD
View
Retailer 10
-
£2,588 GBP
$3,468 USD
View
Price under review
Most Expensive
NZ Jewellers
7e4cb6b3-91e1-4e80-9115-3e93694955b3 · Oct 31
£2,814 GBP
$3,770 USD
View
Price under review
10 more retailers have this diamond
Prices start from £1,294 GBPSave up to £1,062 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
1.57ct Emerald
£1,294 GBP