Halszaak misschien niet maar voor @Aviamarino of kopers van ´double´ kan het toch echt wel een aardig verschil zijn, zeker m.b.t. slijtage. Googlen brengt (ook voor Ebay) veel helderheid, een interessante vond ik bij latandlo.com:
"What is Gold-Filled? Gold-filled is a United States layered gold product that is gaining popularity throughout the Americas, Asia and Europe. It is a quality material that is common in all types of jewelry. The product is easy to care for and will usually maintain its golden shine for a lifetime.
Gold-filled is constructed in two or three layers. The core metal is jewelers’ brass. A gold alloy is then bonded to one or both surfaces of the brass core with heat and pressure. Unlike plated (aka electroplated or “dipped”) metals, Gold-filled is legally required to contain 5% or 1/20 gold by weight. This 5% is then described by the karatage of the gold alloy. Our Gold-filled items are 14kt gold-filled. 14k Gold-filled products are identified as 14/20 Gold-filled; alternatively, 14kt Gold-Filled is also acceptable.
So, What is Gold Plate? – Gold plating is a miniscule layer of solid gold applied to a brass base. The plating does not compose any measurable proportion of the products total weight. It is estimated to be 0.05% or less of the metal product. Gold plating will generally wear off rather quickly and expose the brass base product. It does not stand up to heat, water or wear over time."