no,definitely can't see any link between yours and this one.
I still think yours is possibly French - that large polished pontil mark and the colour combination.
My feeling (s'only a feeling though) is Op's is def not French. Possibly Bohemian though.
hmm, thinking back,I'm think Mike M had a small pot that had snakes on that 'might have been' in your amethyst colourway but maybe with amber (?) rigaree and was originally thought to be Sevres but turned out to be Harrach (snakes like those on my large enamelled jug with snakes)
I'll try and find it again.
Sorry OP to divert from the bottle - it's gorgeous but I think the best bet mght be to search 'aventurine' and prunts and trails.
That might bring up similar items to compare.
m