Drink out of the stone!
There are just few everyday items out of the wonderful material stone.
Often the negative argument “hard” applies . Hard to handle, heavy in the hand, heavy to transport. True, but sometimes it serves for many years as a kitchen countertop or a lamp stand.
Here, this longevity was transferred to an object, which has by no means a long life: A bottle.
The original idea arised in a discussion about hazardous substances in plastic bottles and its residues. Stone or clay pots served earlier as excellent hygienic storage for water.
The insulating character, the enormous hardness, resistance and durability makes stone to the ideal material for a drinking vessel.
A privat project.