This is an example of Graal engraved work we have to sell. 

The technique of engraving within the layers of coloured glass was developed at the Orrefors Studio in 1916.  The process is lengthy and subject to failure.  Not many artists attempt this form of engraving.  This example was hand blown by Master Glassblower Neil Wilkin of Frome

Studio 13 also sells watches and watch batteries

We can also obtain mirrors to order or frame your own