This just means the percentage of a particular metal in the jewelry piece, usually silver or platinum. Marked 900 means there is 90% pure silver or platinum mixed with other alloys, as pure silver is very soft, and cannot be used for making jewelry pieces or anything else, without another metal to give it strength, such as copper.
900 is typical of a marking indicating 90% silver. Most silver jewelry is 925 meaning 92.5% pure. Not sure about the CE stamp.
The general stamps for platinum jewelry are PLAT and PT.In addition, platinum jewelry is also often stamped as follows:90% pure platinum jewelry - 900 Platinum, 900 Plat, Plat 900, Pt900 or 900Pt95% pure platinum jewelry - 950 Platinum, 950 Plat, Plat 950, Pt950 or 950PtStep 8Remember that a "950 Platinum" stamp means jewelry is 95 percent pure platinum, or 950 parts out of 1000. Such jewelry may also be stamped "PLAT," "PT," "950 Plat," "Plat 950," "Pt950," or "950Pt."Read more: How to Read Jewelry Stamps or Labels | eHow.com http://www.ehow.com/how_5794103_read-jewelry-stamps-labels.html#ixzz0u1cRd1ib
That number indicates the fineness or purity of the metal content. 900 means the coin is 90% of that metal.
"750" means the band is 18Kt gold. It also means that it is 75% pure gold (25% alloy metals). Gold karats* (Kt) are essentially a fraction: 24Kt is 100% pure gold. 24/24 18Kt is 75% pure gold. 18/24 (Sometimes stamped 750) 14Kt is ~58.5% pure gold. 14/24 (Sometimes stamped 585) Etc. STERLING SILVER jewelry is usually stamped 925, which means it is 92.5% pure silver. FINE SILVER jewelry is usually stamped .999, meaning it is 99.9% pure silver. Platinum jewelry is usually stamped 900 or 910, meaning it has 90% or 91% pure platinum content. "Italy" means it was made in Italy. *In the US and Canada, "Karats" are used to measure % of precious metal content, not to be confused with "Carats", which is used measure the weight of gemstones. (20grams = 100ct)
Oh, dude, that's like a secret code for a super exclusive club! Nah, I'm just messing with you. So, 900 plat means it's probably made of platinum, and the 100 1 R1D stamp could be a manufacturer's mark or a quality indicator. It's like a little hidden message from the jewelry world, but nothing too crazy.
900
900 milliamps.
The mean is 1025.
It is the purity of the platinum. 850 is 85% pure. 900 is 90% pure. 950 is 95% pure.
Look on the lower left front side of the cylinder as you're standing by the front tire. The cylinder is stamped with either a 900 or 1015 stamp. 900 is the 900 engine 1015 is the KZ1000 engine Take care and good luck, Buzz
Silver is too soft to use in jewelry in its 100% form and it has to be mixed with another metal to make it stronger.92.5 also reffered to as solid silver means that it has a silver content of 92.5% the remaining metal is the one that makes the silver hard enough to make into Jewelry. Sorry but 925 does not mean "pure silver" it means it is Sterling Silver. Pure silver is marked 999, meaning 99.9% purity. 925 means it has 92.5% purity, and 7.5% another alloy. Coin silver used in our pre-1965 circulating silver coinage is 900, or 90% pure, which also means silver doesn't have to have another alloy mixed with it to be hard enough to use. Even pure 999 silver is hard enough to make jewelry with as many countries (including the USA) mint large coins using 99.9% pure silver that hold up well.62.5 Silver means it has a silver content of 62.5% in this form it cannot be called solid silver as it has 30 plus % of an alloy in it.
There is 900 milligrams of sodium in the 10 piece chicken nuggets from McDonald's. There are 470 calories and 30 grams of fat in the 10 piece chicken nuggets.