The Ministere ministÃ¨re Des transports Du quebec quÃ©bec reminds heavy vehicle users and shippers that authorized load limits are reduced during the spring thaw period in order to take into account the weaker load bearing capacity of the road network during. that period
Does 925 Sterling Silver Tarnish. 1  a silver alloy with no more than 7.5% copper. 2  Sterling silver is an alloy of silver containing 92.5% by weight of silver and 7.5% by weight of other metals, usually copper.3  The sterling silver standard has a minimum millesimal fineness of 925. 4  Silver of a fineness of 92.5%. Sterling silver is an alloy of silver containing 92.5% by weight of silver and 7.5% by weight of other metals, usually copper. 2  The sterling silver standard has a minimum millesimal fineness of 925. 3  Silver of a fineness of 92.5%. 4  Silver of 921/2 percent purity.
Trending Now. Answers. Best Answer: Sterling silver is 92.5% pure silver the other 7.5% is an alloy including copper. Copper can oxidise when in contact with your skin or with the air. Therefore the alloy component can discolour and/or tarnish, turning your sterling silver brownish (tarnish) or grey-black (oxidised). You can clean it with a silver cleaning cloth from a jeweler's or even from the supermarket. (Do not use chemical cleaners if the silver jewelry has gemstones or pearls in it.)