A headstone at a grave is one possibility.
they are called masons
Yes, they were made out of stone, that was why it was called the stone age.
Nothing they die.
stonemasons!
because the people then used mainly stone for tools and weapons
People during the Stone Age were simply referred to as "Stone Age people" or "Stone Age humans." They did not have specific names or titles as societies were small and mostly nomadic during this period.
they let themselves die
Stone Age people were often referred to as hunter-gatherers or ancient humans, as they lived during a time when tools and weapons were primarily made of stone.
A stone dwelling is typically called a "stone house" or "stone cottage."
"tung sten" Tungsten (in Swedish called "Wolfram")
Yes, people can sell stone in the form of raw materials such as granite, marble, or sandstone, as well as finished goods like sculptures, countertops, and tiles. Stone is commonly bought and sold in the construction and landscaping industries for various projects.
In Greek mythology, the gas that turns people into stone is called "Medusa's gaze" or simply "Medusa's stare." Medusa, a Gorgon with snakes for hair, had the power to turn anyone who looked directly at her into stone.