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Oct 18

Tips to Identify Precious Gold, Silver, Platinum, Pearl& Diamond Purity

Precious metals and stones are favorites of all. Reasons may differ such as to secure future, to maintain social status, to be center of the mass crowd, to exchange in gifts and so forth. However, almost every precious metal and stone has couple of similarities with other metals and stones so here are couples of tips to differentiate between the real and fake.

Platinum

The world’s most precious metal Platinum is a new craze among youngsters and new riche of the world for its natural forever white luster and shining. As Platinum is a dream for countless jewellery lovers due to its high prices and less production, many are selling white gold as platinum. There are several methods to check the precious metal’s purity. Let’s read how you can confirm its purity.

  1. Look for Sponsor Mark (also known as makers mark). It provides details of the sponsor (maker) who submitted it for hallmarking first time to the concerned authority and each sponsor has their own unique stamps.
  2. Observe Fineness Mark. It tells the purity of the precious metal in parts per thousand. There are four recognized standards of platinum — 850 (85% pure), 900 (90% pure), 950 (95% pure) and 999 (99.9% pure).
  3. Look Assay Office Mark. The Assay office mark offers detail of which assay office has tested and hallmarked your piece of platinum. Moreover you can find out their details from local jeweler’s association or Googling.

Gold

Gold is honored as a true companion of rainy days from ancient times even it has emerged as more reliable investment in today’s uncertain economical environment. Unfortunately natural gold can’t be used to produce jewellery, so jewelers use to mix alloy in various amounts to craft jewellery. But the following clues can help you to verify your gold’s purity.

  1. Observe carefully the gold piece for identifying mark like 10K, 14K, 18K and so on. This mark indicates actual gold content in the marked piece.
  2. Use touchstone and the test needle to verify your gold’s purity. If the particular is marked as 18 Karat, use an 18 Karat needle to examine the claim.
  3. Scratch the touchstone with your gold piece and the needle using same pressure, time and compare their results. If you can’t differentiate between the two samples on touchstone, it’s perfect, else it need another test.
  4. Do an acidic test also. Put a drop of nitric acid on the gold sample and watch the reaction’s result. If the colors goes green it is a base metal or gold plated, milk colors identifies gold plated sterling silver and if nothing happens, it is real gold.
  5. Use density test also. The density of pure 24K gold is approx 19.3g/ml which is much higher than other available metal in routine life. The method is quite easy and simple, it is as follow.

To measure the volume of your gold piece, take a container filled with water to a precise point. Note down the volume of water, now put your gold item in this container and note down the new volume, the difference between these two measurements is the volume of your gold. Now divide weight with this measurement to check the purity level of gold. Now divide the weight by volume.

Silver

Silver is a less worthwhile metal in comparison of gold and platinum to enrich your immovable property. As the share market is eager to touch the bottom line, silver is new favorite of medium class mass. Let’s have a dig on some easy tricks to testify your silver jewellery.

  1. Check your silver jewellery for marking. Usually it might be marked as “.925 sterling silver” or something else. The number .925 shows that the silver is 92.5% pure having 7.5% alloy metal. Similarly if the number is .975, it is 97.5% pure.
  2. Check density of silver item. It’s easy and quite simple. Use the density test method given as above in Gold testifying methods and divide the silver piece’s weight by its volume. As the pure silver’s density is 10.49 grams per cubic centimeter, the closer the item’s density is to pure silver, the greater the purity.
  3. Buying an electronic precious metal tester is the most convenient and accurate way to verify your silver’s purity. However these are expensive as their prices range is $900 to $1,500.

Diamonds

Diamonds are most precious stones in the world. Surprisingly it resembles with many other natural and artificial stones so there are enough chances to be cheated by frauds. Luckily there are ways you can recognize real diamonds among the similar stones.

  1. Ask for a certificate. If the diamond carries a certificate issued by concerned government authorized authority like GIA, AGSL, LGP of American Society of Appraisers, it is truly precious.
  2. Interestingly diamond does not show up on an x-ray while other stones such as cubic zirconium, glass, and crystals contain considerable radioactive qualities so they will be reflect in an x-ray.
  3. Buy a combination diamond/ moissanite tester. This is available almost everywhere and immediately can clear doubts if it is a real diamond or a fake.
  4. Observe the stone’s reflections. A true diamond’s reflection shows various shades of gray but the fake diamond or lower quality diamond will produce a rainbow reflection.
  5. Do fog test. It is another easy and quick method to test the real diamond. Put the stone in front of your mouth and fog it like kids do with a mirror. If the stone is covered in fog and does not clear the fog immediately itself, it is surely a faux. Do the fog test multiple times so you can easily identify the real one.

Pearl

Pearls are an invaluable gift from mother earth. An ideal pearl is a natural pearl created without human intervention) in the deep sea. These tips will help you to distinguish between a genuine and an unnatural pearl.

  1. Rub the surface of the pearl over your teeth. A faux pearl will feel smooth but not a real pearl, so it is quite easy.
  2. Real pearl are imperfect in many aspects even they vary in sizes and shapes from one to another while a faux pearl looks completely perfect from every angle.
  3. A real pearl would not be flawlessly matched under the bright lights. Take your pearl out into the sun or under very bright indoor lighting. Real pearls will show variations in their color and iridescence but if they don’t they are not real.
  4. A real pearl tends to be imperfect and may have bands in their bumps, ridges, pits even they may not have round circle shape too.
  5. Fake pearls have larger, straighter holes unlike real pearl which is drilled from both sides to meet in the center.