I think you could describe it as being 'in the round' - this is an art term that means 'viewable from all directions' especially when referring to sculpture, and, in contrast to something that is 'a relief' meaning a one sided carving meant to be seen mostly front-on.
I believe your Italian term 'tutto rondo' at your wiki link, which also refers specifically to sculpture, translates as 'in the round' (it literally means 'fully rounded' or 'all round' I think - but in English art circles, we say 'in the round'.)
You can also say 'fully modelled' which refers mostly to fully 3D sculpture and specifically means that it can be viewed from all directions.
An example of use is:
- "It's a fully modelled sculpture, made 'in the round'."
The definition at the link below is:
In the round - "(of sculpture) standing free with all sides shown, rather than carved in relief against a ground."
'In the round' can also refer to performsnces at circular theatres where the stage is seen from all sides.
If talking about a general item like a bottle, as you mention, the term '3 dimensional object' conveys that it may be viewed 'in the round'.
You may also describe something as being seen 'in the round':
The sculpture is meant to be seen 'in the round' - viewed from all sides.