The 100 ml Soviet faceted glass is a cult household item with its own classification and even cultural significance.
How to classify it:
Type: Tumbler (a glass without a stem)
Shape: Faceted (with ridges)
Volume: 100 ml — the classic "shot-size" in the USSR
Purpose:
Serving strong alcohol (vodka, liqueurs)
In canteens — tea (in a metal holder), or compote
Also used as a measuring container (for baking and cooking)
Interesting facts:
Often referred to as the "Gus-Khrustalny glass" (named after the glass factory)
Became a symbol of the "common people" in Soviet films, factories, and everyday life
There was even the well-known "half-glass" — 50 ml — used for accurate pours
This glass isn't exactly "barware" in the modern Western sense, but in the context of the USSR, it served as both bar and tableware at the same time.