The symbols on this ring refer to verses in the Koran, verses which serve a protective function to whomever wears the ring. Whether or not the actual significance of the symbols is known the ring still assures the good health, safety and success of him (or her) who wears it. Although its exact age is not known, it clearly was used a long time before we bought it. We call the metal “coin silver” because the source of all silver used in African jewelry is coins, melted down. The silver content is variable but would rarely approach sterling. Size 10.