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Asscher|Lab Grown|IGI

1.57ct E SI1 Asscher Lab Grown Diamond

ID • E/SI1 • IGI LG639415479

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG639415479

Diamond specifications and retailer prices

From £450 GBP
As of October 31, 2026
1 retailer carries this diamond
Only listing: £450 GBP at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 1.57ct lab-grown asscher diamond

This 1.57ct lab-grown asscher 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 LG639415479 or 639415479. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639415479
Dimensions6.41 × 6.29 × 4.24 mm
L/W Ratio1.02
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.41 mm6.29 mm1.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639415479
Side View
Table 66.0%Crown 37.3°Girdle: MediumPavilion 39.6°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: £212 GBP|Low: £84 GBP|High: £369 GBP|Avg: £274 GBP|-6.0%
Retailer 1
Retailer 2
Retailer 3
June 14, 2026
Retailer 1£212 GBP
Retailer 3£305 GBP
Retailer 2£361 GBP

16 data points across 3 retailers

1 retailer

B+
Diamond Quarter
1.57SI1ELG79F746N · Oct 31
£450 GBP
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B+
1.57ct Asscher
£450 GBP