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Asscher|Lab Grown|IGI

1.23ct E VS1 Asscher Lab Grown Diamond

EX • E/VS1 • IGI LG502157917

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG502157917

Diamond specifications and retailer prices

From £659 GBP
As of October 29, 2026
Save £76 GBP (10%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £735 GBP at Taylor and Hart · As of October 26, 2026
View at Taylor and Hart

About this 1.23ct lab-grown asscher diamond

This 1.23ct lab-grown asscher sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG502157917 or 502157917. Listed at 2 retailers as of October 26, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle25°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG502157917
Dimensions5.87 × 5.72 × 3.73 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.87 mm5.72 mm1.23 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG502157917
Side View
Table 63.0%Crown 25°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 65.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £356 GBP|Low: £129 GBP|High: £984 GBP|Avg: £526 GBP|-4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Taylor and Hart
October 26, 2026
Retailer 3£129 GBP
Retailer 5£296 GBP
Retailer 4£342 GBP
Retailer 8£344 GBP
Retailer 1£356 GBP
Retailer 2£404 GBP
Retailer 6£534 GBP
Retailer 7£535 GBP
Taylor and Hart£735 GBP
Retailer 9£984 GBP

76 data points across 10 retailers

2 retailers£659 GBP to £735 GBP

B
Cheapest Retailer
-
£659 GBP
Most Expensive
B
Taylor and Hart
63ZKM7N · Oct 26
£735 GBP
$978 USD
View
1 more retailer has this diamond
Prices start from £659 GBPSave up to £76 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
1.23ct Asscher
£659 GBP