While you can call it a decorative railing, the precise and elegant term is a balustrade. If it’s specifically on a staircase, banister is also a very common and understood word.
Yes, glass railing is generally the most expensive balustrade option you can choose. It is considered a premium product due to the materials, manufacturing, and installation complexity. However, the cost can vary widely based on several key factors.
That’s called a balustrade or, more commonly, a railing. In some contexts, especially with older or solid-walled structures, it might be called a parapet.
The railing on a balcony is most accurately called a balustrade. However, in everyday language, people use several terms, and the “best” word can depend on the specific style and context.