Platinum and silver - Platinum
Posted by cnw | 20 May, 2008
Platinum and silver - Platinum is much more costlier than gold, while silver is fairly cheap. Platinum is combined with other metals such as palladium, ruthenium, rhodium, and osmium and like gold jewelry; platinum also comes with quality markings indicating the proportion of platinum used. Markings however are based on parts per thousand, thus 900 platinum marking signifies that 900 parts out of thousand parts is pure platinum or the jewelry item is made using 90% platinum. Jewelry items made from less than 850 parts per thousand pure platinum will include markings indicating amount of platinum used as well as the amount of other platinum group metals mentioned above.
Silver jewelry that contains 92.5% silver is also called sterling silver and may be marked as 925 meaning 925 parts per thousand are pure silver. Like gold, silver plated jewelry is also very popular.
Gemstones - You may have the option of buying natural stones or those created in laboratories. Laboratory-created stones have the same physical, and chemical properties as natural ones and even look similar. They are cheaper versions of natural stones due to their easy availability and are your best bet if you are looking for an exact replica of natural stones minus the hefty price tag. On the other hand, imitation stones (made of glass, plastic or other materials) that are available in the market only look like natural stones and must not be confused with laboratory-created stones.
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