Personalized Layered Bar Necklace Bar Necklace Set Personalized bar Necklace Customized Mantra Necklace for Etsy 14K Solid Gold Bar Necklace, Name bar Necklace, Custom Bar Necklace Personalised Bar Necklaces Top Trending Styles Onecklace Custom Bar Necklace Get Personalized Names Dates Etsy. 16" with clasp and extender Gold Filled Gold filled is a great choice for those not willing to sacrifice their poolside accessories. Each gold filled piece is made by bonding the gold to the metal underneath (for us that is brass or sterling silver). Gold filled pieces can stand up to regular encounters with water, perfumes and oils. While the piece may darken over time, they will not turn to reveal another color underneath.