Sterling Silver Jewelry Necklace

sterling silver
a silver alloy with no more than 7.5% copper
Sterling silver is an alloy of silver containing 92.5% by weight of silver and 7.5% by weight of other metals, usually copper. The sterling silver standard has a minimum millesimal fineness of 925.
Silver of 921/2 percent purity
Silver of a fineness of 92.5%.

necklace
In combinatorics, a k-ary necklace of length n is an equivalence class of n-character strings over an alphabet of size k, taking all rotations as equivalent. It represents a structure with n circularly connected beads of up to k different colors.
A necklace is an article of jewellery which is worn around the neck. Necklaces are frequently formed from a metal jewellery chain, often attached to a locket or pendant.
(chiefly in South Africa) Kill (someone) with a tire necklace
jewelry consisting of a cord or chain (often bearing gems) worn about the neck as an ornament (especially by women)

jewelry
an adornment (as a bracelet or ring or necklace) made of precious metals and set with gems (or imitation gems)
(jeweler) jewelry maker: someone who makes jewelry
Jewellery ( or /?d?u??l?ri/) or jewelry (see American and British English spelling differences) is a form of personal adornment, manifesting itself as necklaces, rings, brooches, earrings and bracelets. Jewellery may be made from any material, usually gemstones, precious metals or shells.
Personal ornaments, such as necklaces, rings, or bracelets, that are typically made from or contain jewels and precious metal