I have a paperweight similar to your mushroom paperweight.
It is by Colin Ramsay a Scottish paperweight maker - I see your weight has no etched mark to the base; he did not always mark his weights (the little I know about him). Again the closeness of flowers/mushrooms to surface is an optical illusion as is any sparkling - the bubbles as with yours are intentional.
Of course he was not the only artist making weights of this type, without a mark we can only speculate. My second guess would be a good Italian maker, my third Mdina
Your second weight is Mtarfa I think, base mark done with a quick hand - I have some like this and it fits in well with their style of weights.
Thanks Adam P