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how to test if real platinum
There are situations when you have a home for a long time kept a piece of jewelry which , according to legend , is precious . For example, a platinum ring. At some point you’ll want to check whether this is really the case? Here are a few simple ways that can help you determine whether it is made of real platinum. In our other articles , you can also read how to determine the authenticity of gold products , and how to make sure that the decoration of silver now , that is really made of this precious metal , as opposed to imitation .
1. Rate the weight of the product , comparing it with the same volume of gold or silver . The product will be heavier platinum gold silver and considerably heavier .
The main difference from the other platinum metals , of course, is its weight. If you look at the column “density” in the table of properties of metals , we see that only the heavier platinum iridium and osmium . Also , measurements have similar masses , and uranium. All other naturally occurring elements easier platinum. Furthermore, in the manufacture of jewelry used platinum 850, 900 or 950 . This means that the article consists of pure platinum is 85 %, 90 % or 95 %, respectively. Content of pure gold or silver used in jewelry alloys are much lower , so the product is always heavier than platinum . Similar weighted platinum metals by weight does not make sense , because iridium, osmium and rhenium are rare and cost comparable to platinum. Of uranium can not even mention.
2 . Platinum is not exposed to any substances used in everyday life . This means that neither acetic acid nor iodine solution or hydrogen peroxide will not leave any traces on the platinum item .
Platinum refers to precious metals – it does not oxidize in air and in water. It is one of the rare metals without heating does not react with any other known acids and alkalis. Slowly soluble only in a mixture of concentrated nitric acid and hydrochloric acid (” aqua regia “), and liquid bromine .
3 . Platinum is impossible to melt conventional burners used in everyday life – the lighter flame ordinary gas stove, etc. Also , such heating and does not cause discoloration of the product.
Platinum is extremely refractory metal . For a long time the property that is hindered from its active use in industry and jewelry.
4 . The most appropriate method for determining the platinum is in the home product density measurement . For this purpose it is necessary to determine the weight in grams of the subject . Then, determine the volume in cubic centimeters of water displaced by it. You can use a suitable measuring vessel . After that we need product weight in grams divided by the volume of water displaced in cubic centimeters . If the figure is close to the 21.45 – that means you are dealing with platinum . Naturally, the material in the measurement should be void .
how to test if real platinum
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