Rare and valuable minerals

How to determine whether coral is real or not?

How to distinguish coral from a fake
Corals are of organic origin (materials that are formed as a result of biological processes occurring in living organisms – pearls, ivory, mother-of-pearl, tortoiseshell and corals) and are mined mainly in the Mediterranean Sea, near the northwestern coast of Africa. Corals are the calcareous remains of marine animals that form branch-like structures in colonies. The colors are red, pale pink, blue, white and black. Gloss – matte, silky. In Ancient Greece, it was believed that corals gave their owners long life. Today it is one of the most popular stones among jewelers.
Unfortunately, what is sold as red coral is often a homemade imitation made of plastic, glass, painted bone and shells. These tips will help you distinguish real red corals from fakes.
The high cost and popularity of corals has led to a large number of fakes. P. Gilson in France developed a technique for making artificial corals from calcite and dyes. They are much cheaper and are a successful imitation of natural corals.
1. Examine the stones carefully – the imitation made according to Gilson’s method does not have a mesh pattern. Real coral has a distinct visible texture similar to wood, and under a magnifying glass you can see it. Natural corals feel like amber, while quartzite is a cool stone. Pay attention to the cut where the hole for the thread is located. The coral is equally shiny; In contrast, quartzite has a stony, grayish texture. The most common materials from which fakes are made – hard plastic, glass, or even bones and shells – do not have such a texture.
Look for bubbles or processing lines. In glass fakes you can often see tiny air bubbles, and in plastic imitations you can sometimes see thin stripes left after processing. Real corals never have air bubbles.
2. Place the coral in a bowl with a weak vinegar solution or drop a drop on it. If the coral is real, bubbles will appear in the solution. But, again, the best fakes made of painted bone, quartzite or shell will react the same way. If the product does not create bubbles, it is a fake. If it does, it could be real coral.
3. Cheap fakes made of plastic are easy to distinguish by appearance and touch. Touch the coral with a heated needle – a black dot will form on the plastic, and you will smell the burning plastic, which will not happen with natural stones.
4. Sometimes white corals are given noble red and pink colors when dyed. Place the jewelry in hot water or milk; the dyed corals will color the water. They will also leave marks on the body, especially on hot days. In a bad imitation, the color often disappears completely when the product with “corals” is simply lowered into water. Neither plastic nor glass will make such changes. But a painted bone or shell can also change the color of the liquid. If the color of the water or milk does not change, it is not a real coral. If it has changed, you may have real coral.
Run some tests. Although each of them individually will not be able to completely rule out a fake, the coral that passes all the tests is most likely to be a real red coral. 2.0 (3 votes) Report to moderator ♥ 9 LiveJournal Tumblr Blogger Comment 5 Likes 12 Russia, Krasnodar region, Goryachy Klyuch Follow the master’s work subscribe to news Blogs on the topic Comments (5) Comment Follow comments (1) Comment Follow comments (1) Comment Keywords Blog categories TOP 10 Magazine Creative materials Dictionary of creativity Virtual Tours

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Pearls, amber, coral and other gems are again at the peak of popularity today. Jewelry with these stones is natural, beautiful and more affordable than diamonds. Quite often they are chosen because of the energetic power inherent in the stone. However, when the stone is fake, there will be no effect – neither aesthetic nor energetic.

Therefore, when choosing natural gems it’s important to find a real stone.

We learned to create artificial versions of stones and fakes of different quality when we realized that this was a great way to make money. The high cost of natural corals, pearls and other gems leads to a large number of fakes appearing on the market. Regarding corals, these can be plastic beads or glass painted in the desired color. How to learn to identify real coral, how to distinguish a fake from a natural stone? Let’s try to figure it out.

How to distinguish coral – what you need to know

The cheapest fakes produce made of plastic. Usually it has a red or reddish color, but it is not difficult to distinguish such miracle stones. It is enough to knock on a hard surface when you hear a characteristic empty sound. You can touch the surface with a heated needle, if a black burnt dot appears on it and a characteristic smell of captive plastic appears, then it does not “smell” of natural coral.

The second optionpressed coral. This is a more natural sample, but pressed and painted in a noble shade using calcite powder. You can distinguish it from natural coral by its weight; the pressed version is lighter.

As for jewelers, they work with hydrochloric acid, dripping it onto the coral. If the stone is pressed, then the calcite will hiss!

It is known that white corals – simple and much cheaper, so they are often painted pink, red and red. However, when washed in hot water, such a coral will immediately lose several points in brightness, and the water will turn the corresponding color.

Artificial corals leave marks on the body, especially in hot weather.

In France, a method was developed for producing artificial coral of almost all known shades. Natural calcite and dye were used in its creation. This is how pressed coral was obtained at high pressure and medium temperature.

Let’s learn to distinguish natural coral from artificial:

  1. Artificial stone, or rather pressed stone, is closest to natural, even in physical properties. But the absence of a mesh pattern becomes the main characteristic difference between a non-real coral.
  2. Organic inclusions can also be seen in natural coral. They are clearly visible on the surface, especially in good lighting.
  3. The most commonly sold fakes are rose quartzite. However, even the slightest drop of any alkali on the surface will produce a hissing effect.
  1. Remember that red and black corals are underwater plants. They cost like expensive silver, but the differences in texture are obvious! They are visible even with the naked eye.
  2. Quartzite is a cold stone, while coral is even warmer to the touch and resembles amber.
  3. If the stone has a hole for a thread or another cut, then the texture of quartzite will be stone-like and grayish in color. Coral is smooth, the same color and shiny everywhere, the only difference may be the shade.

In any case, even if they offer you to buy artificial coral, and they don’t hide it, and its quality is high, don’t hesitate! Pressed coral jewelry is very attractive, has a bright red or pink hue, and has a clear texture.

At the Soroka store we always indicate the naturalness of the stones, so it’s easy to buy natural coral. If you do not see the inscription “synthetic”, then you can be sure that this is not a fake.

And if you like the imitation, just make sure that it does not stain or crack.

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