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Asscher|Lab Grown|IGI

1.51ct E SI1 Asscher Lab Grown Diamond

ID • E/SI1 • IGI LG566312785

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG566312785

Diamond specifications and retailer prices

From £536 GBP
$718 USD
As of November 1, 2026
Save £113 GBP (17%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £649 GBP at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.51ct lab-grown asscher diamond

This 1.51ct 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 LG566312785 or 566312785. Listed at 2 retailers as of October 31, 2026, with prices from £536 to £649, a £113 spread on the same certified stone. Diamond Quarter lists it at £649. 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

1.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG566312785
Dimensions6.22 × 6.18 × 4.11 mm
L/W Ratio1.01
Culet sizePointed
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
6.22 mm6.18 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG566312785
Side View
Table 67.0%Crown 40.4°Girdle: MediumPavilion 37.6°Culet: NoneDepth 66.5%

Caratlytics Score

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

Last verified: Nov 1
Current: £536 GBP|Low: £358 GBP|High: £1,493 GBP|Avg: £837 GBP|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
September 23, 2026
Retailer 4£358 GBP
Retailer 8£463 GBP
Retailer 1£536 GBP
Retailer 6£658 GBP
Retailer 3£693 GBP
Retailer 10£735 GBP
Retailer 7£919 GBP
Retailer 9£955 GBP
Retailer 2£1,366 GBP
Retailer 5£1,493 GBP

34 data points across 10 retailers

2 retailers£536 GBP to £649 GBP

B+
Cheapest Retailer
-
£536 GBP
$718 USD
Most Expensive
B
Diamond Quarter
1.51SI1ELG859F77N · Oct 31
£649 GBP
View
1 more retailer has this diamond
Prices start from £536 GBPSave up to £113 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+
1.51ct Asscher
£536 GBP