Goldankauf Frankfurt tells you how to please make sure that your gold?
Often you hear: gold darkened, clouded, and changed the color. Pure gold – and on it were white glare. What is that gold is? And the gold at all? How do I know?
At home, you probably check the gold is almost impossible.
You can, of course, play with your product, check the density of gold. But this method is not very trustworthy: sometimes in gold products have internal voids. At the same decoration – not a fake. Material and true – the gold of this test, and as much as show the scale.
Testing for chemical products (except the real gold is dissolved in “aqua regia”) – is also meaningless. The product can be simply and successfully gilded stand all of your execution.
Check the gold jewelry can be difficult, even by the detector. Major firms such as Goldankauf Frankfurt, Physical jewelry (electrical resistivity, conductivity), which focus on such devices depend not only on the amount of gold in the alloy, but also on the composition and the ratio of the remaining components. So announce detectors fakes jewelry by Tiffani Cartie.
And yet, how to check the quality of gold? Trust the professionals. To check the authenticity of gold jewelry shops or in public institutions.
Evaluate and verify the quality of the jewelry can be special public institutions:
To check the authenticity of the gold, take a powerful magnetic quality. Attach the magnet to the gold that you want to check out. If it is attracted to a magnet, it is not quality gold or no gold. This can be either low-grade (10 carats), or in front of you just gold-plated product.
1. To test a sample of gold rubs it on the unfired ceramic tiles. Gold leaves a golden line. Other metals will leave traces of black or gray.
2. Spend a few lines on any dark solid object with the products you want to check out a few lines of known gold object. Compare the results, the lines should be golden.
3. Define “by ear”. Sound in the fall of gold rings and the “subject” to the glass surface must be the same.
4. Bread crumb. Mash pulp of fresh rye bread, roll it and leave the product for several days. When the bread will stale, break. If there are traces of oxidation and greens, it is not gold.
5. Gold – heavy metal, and once to check it for authenticity, the product was lowered into the water: if the sinking quickly – okay, but if not – it was thought that this is not real gold
6. View the gold in the sunlight and shadow. If gold is present, it will retain its color in both cases. Simulation of gold in the shadows much darker than the sun.
7. Verify the authenticity of gold by using chemicals and substances.
If a drop of iodine solution to the jewelry, gold is dissolved, corrosive spots should appear. However, this process is rather slow – visible changes may occur only after several days of exposure.
By the way, for the same reason it is not recommended to store jewelry (rings, earrings, chains, etc.) in the kits.
8. Vinegar. If the product is lower for some time in the vinegar, and it will get dark, it is not gold.
9. Lapis. For the application should be tested wet with water and rub the gold silver nitrate stick. Copper will turn black and gold 583/585 samples remain unchanged! Lapis is sold in pharmacies as a styptic.
10. Nitric acid (concentrated or diluted), leaves no traces, copper and silver react.
11. Aqua regia eats almost everything with which come into contact, with the exception of gold. It is a mixture of nitric and hydrochloric acids in a ratio of 1 to 3 or 4 (in the latter case, it dissolves and platinum).
But still it is best not to risk it and to see a specialist, such as goldankauf-frankfurt.biz.
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