I feel this knobbly ashtray is probably Czech and maybe by one of the Beraneks, but I haven't been able to tie down the maker/designer with any certainty, so over to you!
The colour is quite hard to describe, a kind of mauve-pink, it is in clear towards and including the bottom.
dimensions of 11 x 11 cm or 4.3 x 4.3 inches.
Cheers Geraint.