Breaking a mirror does not cause bad luck; the seven-year curse is a superstition. Historical records document several versions of the belief, but they do not establish a single origin in ancient Rome. One 1881 collection records different outcomes in parts of Britain.
What did people believe would happen?
There was no single recorded consequence. In Domestic Folk-Lore (1881), T. F. Thiselton-Dyer noted that people in Cornwall associated a cracked looking glass with seven years of sorrow. He recorded a Yorkshire saying about seven years of trouble “but no want,” and a Scottish belief that someone in the family would soon die. These are examples collected by one writer in a particular period, not proof that everyone in those places shared the belief.
Did the belief begin in ancient Rome?
The exact origin is uncertain. Modern summaries sometimes connect the seven-year curse to Roman ideas about cycles of health or to beliefs that a reflection represented a person. Those explanations are hypotheses repeated in later accounts. The historical records linked here do not show that Romans codified a broken-mirror curse or that a seven-year bodily renewal cycle created it.
The date of a surviving written record is not necessarily the date a belief began. Folklore can circulate orally before someone writes it down. The careful conclusion is that versions of the belief were recorded in Britain by 1881; this collection does not prove a single ancient source.
Were mirrors once expensive?
Some kinds of mirror were costly, but that fact does not prove the origin of this superstition. Oxford’s Pitt Rivers Museum notes that flat glass mirrors began to be mass-produced in Europe in the 17th century and that silvered glass could be mass-produced after its invention in the 1830s.
What should you do if a mirror breaks?
There is no evidence-based ritual needed to cancel a curse. Keep people and pets away, wear sturdy shoes and gloves, and follow local waste guidance for sharp glass. For a large or mounted mirror, avoid handling heavy shards alone and contact building maintenance or a qualified professional.
If you are researching related beliefs, explore the site’s superstition archive or compare this story with the documented number 13 superstition. A recorded belief can be culturally interesting without being a prediction or a fact about what will happen to you.
Sources
- T. F. Thiselton-Dyer, Domestic Folk-Lore (1881), Library of Congress catalog record — see Chapter IX, “Furniture Omens”; searchable text at Project Gutenberg.
- Pitt Rivers Museum, University of Oxford: Mirrors.
