Sigma Greek Alphabet sterling silver charm .925 x 1 letters charms

Sigma (uppercase ?, lowercase ?) is the 18th letter of the Modern Greek alphabet. In Gematria it has the value of 200. The alternative form of sigma (?) must be used in word-final position. The Greek letter sigma was derived from the Phoenician letter š?n, meaning tooth. The small letter sigma (?) is used to represent standard deviation in math and statistics. It is also used to show syllable in linguistic, a shielding constant in chemistry and sum of divisors in math. The capital letter sigma (?) means to sum up in mathematics.