1) Precious metal alloy
Found on
https://www.crosswordclues.com/clue/platinaire
Platinaire is a patented alloy combining sterling silver and platinum. The alloy is a blend of 92.5% silver and 5% platinum and 2.5% being the undisclosed elements that make up the patent. Platinaire, unlike most gold and silver, is nickel free and hence hypoallergenic. It is also fabricated from recycled silver and platinum, making it a green met...
Found on
http://en.wikipedia.org/wiki/Platinaire
No exact match found.
