Topic: Heavy crystal? bowl - perhaps an ashtray - unknown mark

[acabitto]

Hello again - first of all - want to thank everyone who helped me on my last post - I have another one that is puzzling me. This bowl is about 6" in diameter and about 2 inches high. Fairly heavy - weighs over 1 kilo. It has a very very small mark that I have taken a picture of through a loupe. Does anyone recognize this mark? Or have any other ideas about the origin of this piece? Thank you so much once again.

[Anne E.B.]

This style seems to be referred to as "River Rock" for obvious reasons.  Googling brings up quite a few images which show that particular design.  You might find the maker of yours there.
Also seen here http://www.bigashtray.com/product/large-river-rock-retro-vintage-large-glass-ashtray/ 
Can't help with the base mark.  Perhaps someone will know. 

[acabitto]

This style seems to be referred to as "River Rock" for obvious reasons.  Googling brings up quite a few images which show that particular design.  You might find the maker of yours there.
Also seen here http://www.bigashtray.com/product/large-river-rock-retro-vintage-large-glass-ashtray/ 
Can't help with the base mark.  Perhaps someone will know. 

Thank you Anne, I appreciate the information very much