Blue Opal Chai Necklace and 925 Silver Chain DELIVERY:10-18 DAYS Chai pendants are popular choices as Jewish jewelry gifts. Its worn by both men and women, and has been infused with a variety of meanings that make it a particularly meaningful piece to wear. The Hebrew word chai means life. Its a deceptively simple two letter word made up of the Hebrew letters chet and yud. In the Jewish tradition, each Hebrew letter has a numeric value as well. The sum of the Chais two Hebrew letters equals 18, which has made 18 an especially auspicious number in the Jewish tradition. For this reason, some believe that a Chai pendant has special protective or luck-bearing properties. The deeper question is why the word life should become such a popular pendant. Life has always been a central focus of the Jewish religion and culture. The toast lchaim means to life! For all the many commandments in the Torah, Jews are reminded these are the laws vchai bahem, that you will live through them. Size of Pendant: 14mm or .56 inch long from 'chet to yud' across the letters. Length of Chain: 16 inches long Chain is 925 silver