Delta Greek Alphabet sterling silver charm .925 x 1 Letter Symbols charms

Delta is the fourth letter of the Greek alphabet. In the Greek numeral system, it has the value of four. Originally, the letter delta derived from daleth (the Phoenician letter), which meant door. So, at the beginning, the letter D was drawn as a gate or a door. The capital letter looked alike as the Phoenician's. Today we use this letter in mathematics, science, genetics, finance, etc. And also you can see this symbol is used to denote the major seventh chord in jazz music. The lowercase delta is used to indicate deflection in engineering mechanics, and also you can see using in chemistry, actuarial science, mathematics and optical mineralogy.