History of use

Which care option is not suitable for tanzanite?

In 1967, Tanzanian Maasai shepherds discovered unusual crystals in the Merelani Hills, near Kilimanjaro. They were blue in color, but when viewed from a different angle, they could turn burgundy and purple. At first they were mistaken for precious sapphires, but it soon became clear that these were completely different stones. The crystals ended up in the famous Tiffany jewelry house, and its experts named the mineral tanzanite, after the place of extraction. It quickly became fashionable, and at the end of the XNUMXth century, tanzanite crystals sold better in Europe than rubies and emeralds. What made this stone so popular?

Physical and chemical properties

Tanzanite is a variety of zoisite, an aluminum and calcium silicate. The stones owe their origin to volcanic processes that occurred in Kilimanjaro in ancient times. In terms of physical properties, crystals are very similar to glass: they are just as transparent and fragile. Due to its fragility, tanzanite is classified not as a precious stone, but as a semi-precious stone. Its hardness on the Mohs scale is from 6,5 to 7 units. For comparison, for the most durable mineral, diamond, this indicator is 10, for sapphire – 9, for glass – 6-7. The stones have an important property for jewelers – perfect cleavage. This means that they always break into pieces that resemble whole crystals. This makes them easy to process, but still requires great care when cutting. One of the most important characteristics of the gem is the alexandrite effect, the ability to change color depending on the type of lighting. This is due to the characteristics of light refraction.

Types of tanzanite

  • Deep;
  • Superficial.

Stones that lie deep have dark green and brown shades. Less common are colorless and pink samples. These colors are not highly valued by jewelers, but some tanzanites turn blue when heated between 400 and 600°C. In this form they are used for jewelry.

Surface stones turn blue as a result of heating by Kilimanjaro lava or prolonged exposure to sunlight in the hot mountains of Tanzania. Such crystals lie close to the surface and are considered the most valuable.

In Tanzania, an opaque variety of the gem is also found, which contains admixtures of graphite and ilmenite. Crystals of beautiful shades are not cut, but polished like cabochons and used mainly for earrings, pendants and rings.

How to distinguish a real stone from a fake

Attempts to synthesize a gem identical to the natural one have not yet yielded results. But due to the great popularity of crystals, fakes can be found on the market. You can distinguish natural stone by some signs:

  • Alexandrite effect. Glass, which is often used to replace precious minerals, does not change color depending on the light. Genuine Tanzanian crystal takes on purple and reddish hues.
  • Color. The natural mineral has very pleasant and deep tones. Too bright and unnatural shades may indicate a fake.
  • Purity. In jewelry making, only stones without inclusions are used. Even if there are natural inclusions in the crystal, they are removed by annealing. Therefore, stones of questionable purity cannot be natural tanzanites.
  • Change in shade when immersed in liquid. If you have doubts about the authenticity of the crystal, you can conduct an experiment and immerse it in water. A real gem will lighten a little around the edges due to the nature of light refraction. This will not happen with imitation.
  • Price. Tanzanite is a semi-precious stone, but it is very rare and therefore expensive. It is difficult to find jewelry with it for less than 50 rubles, and samples with large crystals can cost 000 times more. If you are offered inexpensive jewelry, the stone in it is fake.

The best guarantee is a certificate of authenticity, so you should only buy tanzanite in trusted stores. If you decide to make a purchase from a private seller, first order an examination from a jeweler. He will conduct an independent assessment and name the real cost of the product.

Features of care

Tanzanian gemstone is a fragile material that requires very careful care. Please note the following:

  • The crystal can suffer from even minor mechanical damage. Do not drop tanzanite items and store them separately from others. It is best to use soft bags, cases and boxes. All products must be stored so that they do not touch each other. Always remove jewelry when engaging in sports, outdoor activities, cleaning or repairs.
  • The stone does not tolerate temperature changes. Do not wear jewelry in the cold; take it off before going to the sauna or the beach.
  • Wet environments can also be dangerous. Jewelry should be removed before taking a bath or shower.
  • Tanzanite can change color when exposed to an acidic environment. Make sure you are not wearing rings, earrings or bracelets when applying makeup.
  • For care, use special products or an unsaturated solution of baby soap. It is best to take your jewelry to a jewelry store for cleaning.

Interesting facts about tanzanite

There is a version that the “Heart of the Ocean” from the movie “Titanic” is tanzanite. Indeed, finding such a large blue diamond and cutting it into a heart shape is an almost impossible task for filmmakers. Sapphire is too expensive and has a very dark shade that looks unfavorable on the screen. Bright Tanzanian crystals would be a worthy replacement. But this is just a theory that cannot be tested. But there are no less interesting facts that will help you learn more about the mysterious African stones.

Fact No. 1. Tanzanite is a profitable investment

These crystals have only one deposit – Merelani Hills in Tanzania. 60% of production comes from Tanzanian companies, the remaining 40% from foreign companies.

Merelani Hills is being developed on an industrial scale, and many experts agree that the reserves will soon be depleted. This means that rare gems will no longer come to market, and their price will rise every year. The sooner you invest in tanzanite, the more you can earn.

Fact No. 2. Tanzanian crystals are used only in jewelry

These African gems are too rare to be sold as an ornamental material. They are too soft and fragile for industry. Therefore, the only application is jewelry making. At the same time, only real masters decide to process crystals, because it is easy to damage them, but a whole fortune is at stake.

Fact No. 3. Tanzanite is a unisex stone

Like sapphires and diamonds, these gems are suitable for both men and women. They emphasize status and add chic. Our men’s collection features cufflinks inlaid with tanzanites and diamonds. Transparent and shining diamond scattering accentuates the blue hue of the crystals, making it even deeper and richer.

Fact No. 4. The largest crystal weighs 9,2 kg

In June 2020, Tanzanian private miner Saninyu Leizer became a millionaire. He found two tanzanite crystals, the total weight of which was 15 kg. One of them weighed 9,2 kg, the second – 5,8. Previously, the largest crystal found in Merelani Hills weighed 3,3 kg.

Saninyu Leizer sold the find for $3,4 million, and Tanzanian President John Magufuli personally congratulated the prospector by phone.

Fact #5: The popularity of tanzanite is an example of good marketing

Semi-precious gems are usually not very expensive and are not in particularly high demand. But tanzanite is an exception, and its fate was determined by a marketing campaign. It had three key components:

  • The crystals were offered as a replacement for more expensive sapphires;
  • The market was very sensitively regulated so that supply was always lower than demand;
  • The face of the advertising campaign was Elizabeth Taylor, an example of refined taste and style.

Today, African crystals do not need advertising. They have strengthened their status in the market, and the imminent depletion of their only deposit makes them even more valuable.

Types of Jewelry

The catalog of the MIUZ Diamonds jewelry house presents a large assortment of sophisticated jewelry with tanzanites. You can order rings, earrings, pendants, necklaces, brooches and cufflinks from different collections. Among them:

  • Empire is a luxurious classic with a modern twist. Blue crystals are skillfully complemented by a scattering of sparkling diamonds and combined with precious sapphires, usually darker in tone.
  • Millennium Premium is an exclusive collection with grown diamonds, hydrothermal emeralds and natural tanzanite crystals.
  • Royal is a collection of timeless treasures with rare natural stones.
  • Precious Heritage is a historical collection inspired by tiaras from the Romanov era.

Women’s tanzanite rings can serve as engagement rings. Such a rare piece of jewelry can complement any look and become a symbol of love, which, like this stone, becomes more and more valuable over the years.

In the MUZ catalog you can choose individual jewelry or entire sets. Place an order on the website and pick it up at your nearest MIUZ Diamonds jewelry store. All products have a 6 month warranty.

Tanzanite stone: properties and interesting facts

Tanzanite stone: properties and interesting facts In 1967, Tanzanian shepherds from the Maasai tribe discovered unusual crystals in the Merelani Hills, near Kilimanjaro. They were blue in color, but if viewed from a different angle, they could become maroon.

Jewelry – these are, first of all, decorations. They must be handled carefully, avoid mechanical damage and be stored carefully. They should be removed during sports, physical activity, and visiting the bathhouse or sauna. It is also necessary to part with decorations while doing housework.
But even if you follow these recommendations, jewelry will lose some of its shine under the influence of the external environment. Oxygen, water, household chemicals, cosmetics, creams, sun – all these factors can negatively affect the appearance of jewelry.
When heated, jewelry stones attract dust and grease, so the play of light on their edges becomes less bright. Topaz, pearls, and amethyst are “afraid” of the sun—under direct exposure to sunlight, they lose their color.
Jewelry should be protected from mechanical influences. They lead to the appearance of many micro-scratches on the surface of the precious metal, due to which the product loses its shine. Fragile jewelry stones (emeralds, chrysolites) can be seriously damaged if dropped or hit. Cosmetics and perfumes can cause stains to form on the surface of the precious metal. It is necessary to avoid contact of gold with alkaline detergents, which contain chlorine and iodine, which have a detrimental effect on it.

Every time you remove jewelry, it should be wiped with a special microfiber cloth. If you don’t have one at hand, flannel or suede rags will do.

At home, you can clean your jewelry from minor stains in a soapy solution with ammonia (5-10 drops of alcohol per glass of water). The product should be washed, then rinsed in clean water and dried.
Is your jewelry heavily soiled? To clean them, you can place them in a solution of water and dishwashing detergent for a day (it must be selected especially carefully to avoid the presence of components in its composition that negatively affect the precious metal).
Onion juice is a way to restore shine to a darkened product. After rubbing it with it, after a couple of hours it will shine brighter. Upon completion of the procedure, the product must be rinsed with clean water and allowed to dry.

Jewelry made from silver is more susceptible to losing its luster than items made from other precious metals. Therefore, you should always handle them carefully and care for them more often.
For silver, even air is an aggressive environment. When exposed to oxygen, this metal oxidizes and darkens.
To clean silver jewelry, use a soft, dense cloth (microfiber or flannel). More aggressive cleaning compositions are unacceptable, as they negatively affect the decorative coating used in the decoration (for example, rhodium plating).
You can remove dark deposits from the surface of silver jewelry by washing them in warm soapy water and cleaning them with a soft, dense cloth soaked in ammonia. After cleaning, the jewelry should be rinsed in clean water and dried. Please note that this method should not be used to clean jewelry with a decorative black coating.
Silver, like no other metal, needs to be cleaned with special care products, called jewelry cosmetics. They are sold in stores and are specially designed for products.

Jewelry with enamel coating differs from other products not only in its original design, but also in its specific care. To maintain the original brightness of enamel paints, you must follow several simple rules:
Rule 1. The decorative coating is a thin layer of glass, so it is sensitive to mechanical stress. The impact can cause chips and cracks on the enamel, so it is not recommended to drop products with enamel.
Rule 2. Jewelry with enamel must be protected from direct sunlight and temperature changes. Otherwise, the coating may fade or crack.
Rule 3. Do not allow enamel to come into contact with acids, alkalis and chlorine, that is, with any detergents, powders and cleaning gels. Enamel can also be damaged by interaction with cosmetics (creams, lotions) and sea water.
Rule 4. In order to maintain the brightness of the decoration, but not damage the enamel coating, products with enamel must be washed in cool water, adding a small amount of ammonia to it. To clean the enamel, you can use a soft brush and tooth powder. Then the jewelry must be rinsed in clean water and wiped with a soft cloth.
Rule 5. Do not forget that it is recommended to store products with enamel separately so that their surface does not come into contact with other metals.
All jewelry inserts require careful and regular care. First of all, you need to find out what hardness your stone has. For example, diamond, sapphire, emerald, ruby, quartz, topaz, ordinary beryl, aquamarine and some other stones have a hardness coefficient of at least five. Therefore, products with them can be cleaned in a solution of any washing powder using a soft brush, but only on the condition that the metal of the product is gold or platinum, and not silver. Then the decoration is washed in distilled water.
To refresh a tarnished stone, clean it and remove accumulated dirt, you can wash the jewelry in a solution of water and ammonia (5-10 drops of alcohol per glass of water). This way you can update products with topaz, beryl, aquamarine, amethyst, citrine, chrysolite, garnet, tourmaline, chrysoprase. It is better not to use a soap solution, as the fats it contains can form a film.
Jewelry with ruby, sapphire and alexandrite can be washed in warm soapy water with the addition of ammonia (1 teaspoon per half glass of water), then rinsed in clean water and wiped.
Many gold jewelry, the inserts of which are not subject to the destructive reactions of chemicals, for example, diamonds, rubies, sapphires and their synthetic analogues, are well cleaned by immersing for a short time in a heated solution consisting of 120 grams of baking soda, 50 grams of bleach, 30 grams of sodium chloride salt and half a liter of water. After washing, the jewelry must be rinsed in cold water and then dried.
Products with “living” gems – natural turquoise, coral, pearls, mother-of-pearl and opal – require especially careful care.

But remember: before washing jewelry that, in your opinion, is not afraid of water, check whether the stones are attached to it with glue. If so, wash very carefully or have a jeweler clean it.

Diamonds quickly collect dust and oils. In order to return the diamond to its original shine, it is enough to rinse the entire stone or product in a baking soda solution. Dealers use alcohol for washing diamonds, and lint-free cloths for wiping, much the same as for wiping optics.
Diamonds are practically not afraid of adverse effects. Still, although a diamond is the hardest stone and its surface is almost impossible to scratch, a diamond can nevertheless be broken, so protect the stone from strong impacts and heating to high temperatures.

Like most gemstones, beryl is very fragile and easily chips and cracks.
It is recommended to wash in an aqueous solution of ammonia or in a warm solution of washing powder (soap solutions with a high fat content will leave an unpleasant viscous residue on the stone, so it is better to use washing powder).
Precious varieties: emerald (dense green), aquamarine (blue), heliodor (golden), sparrow (pink), etc.

Emerald (a variety of Beryl) is a relatively fragile stone and cracks easily form in it. Should be protected from heat.
Do not use steam, ultrasound, refined gasoline or any organic solvents to clean emeralds. These products dissolve and wash away the oils that have been used on the gemstones.
When storing jewelry with emeralds, avoid contact with other precious stones; hard stones can damage softer ones. After prolonged wear, emeralds often require re-oiling. This operation should only be performed by an experienced jeweler.

Large transparent and completely pure rubies are almost never found in nature. Often, to refine a ruby, they resort to the method of staining and impregnation. This allows you to improve the color and “heal” small cracks. The dye is not in the oil, but is deposited on the cracks by evaporation of the solution or a chemical reaction. However, over time, the oil may dry out, leak, or change color. Solvents should be avoided when caring for these rubies. If rubies are impregnated with glass-containing compounds, then hot and aggressive solutions and ultrasonic baths should absolutely not be used for cleaning.
Ruby is “afraid” of heat. When heated, the color of rubies becomes pale pink, i.e. heating weakens the color.

Currently, most (up to 90%) of sapphires are treated before sale to weaken, enhance or even out their color using heat. If you do not want to change the appearance of the stone, then avoid heating.
In terms of hardness, sapphires are second only to diamonds, making sapphires especially easy to care for. However, avoid strong impacts, which may cause cracks and chips to appear on the stone. Sapphire can also get scratches when it comes into contact with harder materials.
Sapphire can be cleaned in a soapy solution with ammonia.

Topaz requires special care – a stone with which you need to be careful. Under no circumstances should it be allowed to heat up, as this will lead to discoloration. The same thing happens if the stones are kept in the light for a long time, especially in the sun.
Topaz should be protected from shocks and temperature changes; it may break.
Topaz should not be cleaned with ultrasonic or mechanical cleaning devices, or with strong chemicals.
Be especially careful with “rainbow topaz,” which is created by coating topaz with metal oxide. This coating scratches easily.
Some brown topaz will lose color over time, no matter how well you care for it. This is their natural property.

Amethyst fades when exposed to direct sunlight.
Also, when heated to more than 250 degrees, the stone loses its color, turning to a yellow-green hue, ultimately becoming colorless with prolonged exposure.
Amethyst is a fairly durable mineral that attracts dirt. Cleaning with soapy water and a soft brush is quite suitable. Just remember that it is “sensitive” to sudden temperature changes.
Ultrasonic cleaning is ideal.

Garnet has the ability to fade and change color when exposed to bright sunlight and heat, so products containing garnet should be protected from temperature changes.
To clean pomegranates, use warm, soapy water and a soft brush. Ultrasonic cleaning is safe for most garnets except andradite (demantoid). Do not steam clean the stone.
Garnet is not particularly hard, so it is not recommended to store garnet products together with harder materials.

Aquamarine (a variety of Beryl) can crack when exposed to extreme heat.
If you notice that the stone in your jewelry has become somewhat dull and has lost its shine, it needs to be cleaned and accumulated dirt removed. Give it a few minutes and rinse it in a solution of water with ammonia (5-10 drops of alcohol per glass of water) or put it in a warm solution of washing powder for several hours, then rinse and dry.

Tourmaline has a very wide range of colors. In nature, the most common tourmalines are black, brown, colorless, blue, and bright yellow. The rarest colors of tourmaline are red, pink and green. Tourmaline crystals are often multi-colored.
Tourmaline may crack if exposed to extreme heat.
It is recommended to clean the products not too often, using a soft cloth or a very gentle brush. Tourmaline should be cleaned in soapy water, making sure that the water is warm (not cold or hot). Steam and ultrasonic treatment are not allowed.

Tanzanite requires special care. It needs to be cleaned periodically, but not too often. It is best to use warm soapy water and a soft brush for this. Do not use ultrasound or steam cleaning, as the stone can be damaged. It is also necessary to avoid contact of any acid with the stone and sudden temperature changes. The fact is that tanzanite, while distinguished by its amazing beauty, is at the same time unusually fragile – it has perfect cleavage and requires the greatest care when cutting and setting; one incorrectly calculated effort – and the gem will crumble into a pile of fragments.

Peridots in jewelry were often called “olivines” or “peridots.” Peridot – may crack if exposed to extreme heat.
The stone should be protected from acids. It is recommended to wash in an aqueous solution of ammonia or in a warm solution of washing powder (soap solutions with a high fat content will leave an unpleasant viscous residue on the stone, so it is better to use washing powder).

Long exposure to the sun is contraindicated for opal – it becomes dehydrated, loses its iridescence, and becomes milky white.
It should be protected from sudden changes in temperature, which can cause the formation of cracks due to the large amount of moisture contained in the opal.
Opal should be protected from impacts and abrasive materials. Due to the porous structure of the stones, they cannot be washed with water! Simply clean with a soft brush and add shine with a suede cloth. The stone can only be cleaned with dry chamois. Ultrasonic and steam treatment are not permitted.

Pearls should be protected from heat, high humidity, soap, cosmetics, household chemicals, and direct sunlight.
Despite the fact that pearls themselves are born in water, they lose their luster and become cloudy due to the water content. Therefore, it is important to properly observe the conditions for its storage – in soft fabric, separately from other jewelry.
To restore the pearl’s shine, it must be washed in a weak soap solution, rinsed thoroughly in clean water, and allowed to dry. To get rid of dirt and moisture, you can lightly wipe it with potato starch.
As an organic gemstone, pearls react to use. If the jewelry is not worn for a long time, the stone will become dull. Therefore, it is recommended to wear pearl jewelry periodically.
Please note: since pearls are often adhesively set, such items should be cleaned with particular care. They are contraindicated from strong chemical components, which can damage the adhesive composition and, consequently, the reliability of the fastener.

Should be protected from temperature changes, acids, and heat. Soap, cosmetics, and perfume can turn turquoise green.
Due to the porous structure of the stones, they cannot be washed with water! Simply clean with a soft brush and add shine with a suede cloth. The stone can only be cleaned with dry chamois. Ultrasonic cleaning is not acceptable.
In the sun it slowly discolors, so the average lifespan of the stone does not exceed twenty years. If turquoise has lost its shine and turned green, it means that its life is over, and they say that it “died.”

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