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Asscher|Lab Grown|IGI

1.00ct E SI1 Asscher Lab Grown Diamond

ID • E/SI1 • IGI LG450012680

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG450012680

Diamond specifications and retailer prices

From £234 GBP
As of October 30, 2026
Save £611 GBP (72%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £845 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown asscher diamond

This 1ct lab-grown asscher sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG450012680 or 450012680. Listed at 8 retailers as of October 29, 2026, with prices from £234 to £845, a £611 spread on the same certified stone. MOH London lists it at £845. 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

1.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle24.7°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG450012680
Dimensions5.56 × 5.44 × 3.47 mm
L/W Ratio1.02
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT). Type II
Top View
5.56 mm5.44 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG450012680
Side View
Table 51.0%Crown 24.7°Girdle: ThickPavilion 37.8°Culet: NoneDepth 63.8%

Caratlytics Score

How it works →
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: £845 GBP|Low: £234 GBP|High: £845 GBP|Avg: £410 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 2£234 GBP
Retailer 6£258 GBP
Retailer 5£313 GBP
Retailer 3£341 GBP
Retailer 8£344 GBP
Retailer 4£357 GBP
Retailer 9£358 GBP
Retailer 7£633 GBP
MOH London£845 GBP

3 data points across 9 retailers

8 retailers£234 GBP to £845 GBP

A
Cheapest Retailer
-
£234 GBP
Retailer 2
-
£258 GBP
HK$2,700 HKD
View
Price last confirmed 56 days ago
B+
Retailer 3
-
£313 GBP
$419 USD
View
B+
Retailer 4
-
£341 GBP
View
B
Retailer 5
-
£357 GBP
$478 USD
View
B
Retailer 6
-
£615 GBP
View
Retailer 7
-
£633 GBP
SGD 1,146 SGD
View
Price last confirmed 23 days ago
Most Expensive
B
MOH London
LG450012680 · Oct 29
£845 GBP
View
7 more retailers have this diamond
Prices start from £234 GBPSave up to £611 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
1.00ct Asscher
£234 GBP