During the Middle Ages, fortune - tellers chose a gem for each month of the year. They encouraged people to wear the gem of the month of their birth, supposedly to protect the wearer from harm.
मध्ययुगादरम्यान, भविष्य सांगणारे वर्षातील प्रत्येक महिन्यासाठी एक रत्न निवडत असत.