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Asscher|Lab Grown|IGI

4.01ct E SI1 Asscher Lab Grown Diamond

ID • E/SI1 • IGI LG677556270

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG677556270

Diamond specifications and retailer prices

From £532 GBP
As of October 30, 2026
Save £1,120 GBP (68%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,653 GBP at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 4.01ct lab-grown asscher diamond

This 4.01ct lab-grown asscher sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG677556270 or 677556270. Listed at 7 retailers as of October 29, 2026, with prices from £532 to £1,653, a £1,120 spread on the same certified stone. Diamond Quarter lists it at £1,653. 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

4.01
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677556270
Dimensions8.74 × 8.70 × 5.82 mm
L/W Ratio1.00
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.74 mm8.70 mm4.01 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677556270
Side View
Table 64.0%Crown 35.4°Girdle: Slightly ThickPavilion 41.5°Culet: NoneDepth 66.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £532 GBP|Low: £532 GBP|High: £4,993 GBP|Avg: £1,824 GBP|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 1£532 GBP
Retailer 6£697 GBP
Retailer 4£728 GBP
Retailer 5£859 GBP
Retailer 3£953 GBP
Retailer 8£954 GBP
Retailer 7£968 GBP
Retailer 2£3,240 GBP
Retailer 9£3,628 GBP
Retailer 10£4,993 GBP

3 data points across 10 retailers

7 retailers£532 GBP to £1,653 GBP

A
Cheapest Retailer
-
£532 GBP
A
Retailer 2
-
£697 GBP
HK$7,300 HKD
View
A
Retailer 3
-
£728 GBP
$975 USD
View
B+
Retailer 4
-
£859 GBP
$1,151 USD
View
B+
Retailer 5
-
£953 GBP
View
B+
Retailer 6
-
£968 GBP
$1,297 USD
View
Most Expensive
B
Diamond Quarter
4.01SI1ELG70D559N · Oct 29
£1,653 GBP
View
6 more retailers have this diamond
Prices start from £532 GBPSave up to £1,120 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
4.01ct Asscher
£532 GBP