To my untrained and Antipodean eye, this little guy is a hedgehog in amethyst glass. (I have a couple of glass echidnas, which are different animals entirely - even I know that much!). He is 5cm high by 5.5cm wide by 9cm long and weighs about 300g.
Could the surface be moulded like that or is it cut? The eyes are clearly cut, because they have been left unpolished. The base is highly polished but has some wear marks.
It is signed, apparently by "M. Ganton" or something like that. Who is that?