I think this is Murano but I'm intrigued by the technique and what this technique would be called. I have quite a bit of Murano sommerso and some Murano alabastro but each layer here seems to be the same colour and it is not cased in clear glass. No reaction to UV light. The bowl measures 5 5/8ins x 1 1/2ins and weighs around 700g. The base is polished flat although it looks matt in the picture. Any help regarding technique and possible maker would be appreciated thanks.
Alastair