Certification marks 14k gf®

When you buy ” 14k GF®” marked products, you are guaranteed that you will receive  jewellery produce made better like American legal standards for Gold Filled.

 How 14k gf® quality standards is produced / made:

To obtain specific product properties, it must be produced in two stages production process; the first phase is the production of the core of the product and the second stage is the coating core with precious metal. The core of the product should be made of an alloy copper or silver and gold, then covered with a layer of precious metal. Basically the core of the product is; cast element, wire, sheet metal, tape and any other elements necessary for the production of jewellery and other products within class 14 of the List Goods and Services. The layer covering the core is to be made of precious metal at least 14 carat gold (AU) or at least 950 platinum (Pt) and should be applied to the entire surface of the product at least 1 micron thickness. A protective layer covering the core is applied to the core in the electrolysis process. The alloy metals from which the core is made can only be gold (AU), silver (Ag), copper (Cu) and in special cases, to give the metal specific plasticity, elasticity or malleability; tin (Sn). Silver and/or copper can be in any proportion in the alloy or constitute a 96% alloy component and tin, if used to produce the core, does not may constitute more than 16% of the alloy. However, gold has a purity of at least 14 karat constitute not less than 5% of the alloy . Any proportion of silver or copper and specified tin content from 0% to 16% contained in the resulting metal alloy is necessary in to enable manufacturers to obtain the appropriate physical properties of the alloy metal such as extensibility, hardness, elasticity or other physical properties.

The Difference Between Pure Gold, Solid Gold, Gold-Filled and 14k Gf®:

24K Pure gold is not the same as solid gold, and solid gold is not the same as gold-filled or gold GF. 24K gold contains 99.99% root of gold. If we add other metals not more like 65 % to pure gold, it may alloy gold, and we can call it gold. Gold is an alloy that is described with the ratio of pure gold to other metals in the alloy and cannot be less than 8 carats; if less, it cannot be called gold. For example, 12-carat gold contains 50% pure 99.99% gold in the alloy; The remaining 50% may be silver, tin or copper. Wherein solid gold refers to any gold item where the inside of the item is not hollow. Gold-Filled is a layered product, and cartage only refers to the surface gold layers; the outside gold layer must compose of 14-carat gold and the weight of the 14-carat gold must be at least 5% of the product wight. 14k GF® Branded product must contain in their alloy structure at least 5% 14-carat gold and must be over plated with 18-karat gold or platinum, the layer and internal structure guarantee durability and the appearance of the product for life.