Phage Necklace in Gold or Silver Show off your love for Science with this beautiful silver phage necklace. A bacteriophage, also known informally as a phage, is a virus that infects and replicates within a bacterium. The term was derived from "bacteria" and the Greek: φαγεῖν, "to devour". Purchase includes a natural jewelry box and gift packaging. Gift? Add-on a hummingbird card for only $7: https://www.etsy.com/listing/202506976/nikola-jewelry-hummingbird-card Add-on extender: https://www.etsy.com/listing/197483038/add-on-necklace-extender-chain-with Necklace longer than 20 inches: https://www.etsy.com/listing/196689227/extend-my-necklace-up-to-30-inches Turn pendant into a keychain or ornament: https://www.etsy.com/listing/1003597263/turn-any-pendant-into-a-key-chain-or ★ ITEM DETAILS ★ Pendant: Stainless Steel or Gold Plated Stainless Steel Chain Material: Sterling Silver, Rhodium Plated, Gold Plated, Gold Filled (Your Choice!) Sterling Silver jewelry is an alloy that contains a mixture of 92.5% pure silver and 7.5% of another metal, usually copper. Sterling silver is safe for sensitive skin; however, it must be stored in a dry dark place as over time it will tarnish. It can be restored with a silver polish cloth. Rhodium Plated is a rare silver-white metal of the platinum family that is placed over a base metal. It is particularly hard and tarnish-resistant. Gold-Filled Jewelry employs a process in which gold is bonded to a base metal alloy such as nickel or brass. All exterior portions are solid gold and safe for sensitive skin. Gold Plated Jewelry employs a base metal which is then electroplated with gold that deposits a thin layer of gold on the jewelry