Mirrors have been endowed with mysterious powers since ancient times, so over time many superstitions have been formed about them.
The belief about a broken mirror was especially popular. It was said that this could bring a series of misfortunes upon a person.
Getting cut by splinters is a pretty serious consequence. It could pass for an accident in this case. But the story turned out to be more unique.
The belief is closely connected with what the first mirrors were made of. Until almost the middle of the 19th century, the base was a mercury-tin alloy. Craftsmen often died from poisoning by toxic fumes.
The mirrors were coated with mercury and a protective layer was applied on top. Thanks to it, the dangerous substance did not flow down or evaporate.
When a mirror cracked or broke, toxic fumes filled the room or the entire house. The health of the residents was greatly damaged. The consequences were extremely severe.
This is how the sign arose that breaking a mirror is a sign of trouble. They said that a person is doomed to illness, death or loss of relatives. Over the years, the sign has transformed into something mystical.
"Seven years of troubles" arose because it was difficult to clean a room from mercury. The process dragged on for a long time, so this phrase was added to the popular superstition.