What does nf mean ring on a

Nanofiltration is a relatively recent membrane filtration process used most often with low total. Nanofilters can “soften” water by retaining scale-forming, hydrated divalent ions (e. . I inherited this old ring that is marcasite on the sides and Mother of Pearl in the center. Inside the band are the letters NF and the numbers 925. Can.I inherited this old ring that is marcasite on the sides and Mother of Pearl in the center. Inside the band are the letters NF and the numbers 925. Can.Mar 27, 2011 . WHAT DO THE MARKS STAMPED INSIDE YOUR RING MEAN? Posted on March. More than likely it will be shown as 10k, 14k, 18k or Plat.The 925 mark probably indicates that the ring is made of 92.5% sterling silver. Improved answer: The 925 mark indicates that the metal the ring is made of is an  . The "925" stamp on the silver is an indication of its fineness and a minimum millesimal fineness number for a sterling silver is 925. It contains about 92.5% silver . QCD is a makers mark. It means the piece was made by a company called Quality Color Design, Inc. They manufacture 14k gold, 18k gold, silver and platinum . Does jewelry from Thailand marked nf 925 have real diamonds? Most likely, the. What does NF 925 Thailand mean stamped inside of a ring? It means nickel . 925 means it is sterling silver or a 92.5% purity of silver. NF is a hallmark of the silversmith. I am trying to find nf now.The term "nickel free" can be confusing since jewelry marked nickel free is still allowed to. Hypoallergenic does not mean nickel free, nor does it have a legal or .

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