Turquoise is a semi precious stone and very famous for its clear in between blue to greenish colour. According to anthropologists, it is among the oldest gemstones that have been used since historical times, with records showing that it was being used by the Egyptians, the Aztecs besides the Native Americans mainly in jewelry.
Minerally, turquoise is an opaque mineral and a hydrous phosphate of copper and aluminum. Bit of copper gives the blue color and the greenish hue is contributed by the presence of iron. Its transparency solution can be found in a translucent to opaque spectrum.
This colour is also linked to some metaphysical qualities In Christianity, for instance, this colour is believed to symbolise heaven on earth. It is commonly believed to denote richness, prosperity and fortune and people who usually get rich are associated with it. This piece of garment is also used for healing purposes, for the wearer to be able to be relaxed and have some quiet moments.
The composition of turquoise includes copper and aluminium phosphate hydroxide (CuAl6(PO4)4(OH)84H2O). Its only major use is in the production of jewelry and conspicuous items. In this case, however, the word is very popular, so popular that the English language uses turquoise as the name of slightly greenish blue that defines high quality of the jewel.
The customer will utilize a mineral’s name to refer to it more often when such minerals possess a familiar, unique, and extraordinary color. Gold, silver, and copper are the only three minerals that come closer to turquoise with regard to frequently used colour description.
How Many Turquoise Colors
Green gems can be of any shade primarily depending on the type of mineral and the conditions in which it was formed. Here are the main color variations:Here are the main color variations:
1. Sky Blue: People tend to associate this color with the most desirable turquoise, though this is related primarily to the Persian hue of the stone.
2. Blue-Green: This color variation is common in the turquoise originating from the Southwestern United States.
3. Green: If iron or chromium is present, the colour comes out to be greenish.
4. Light Blue or White: These ones are rather limited and can be identified in some mines.
Colour may also be affected by the matrix in which the turquoise is set; these are the rock materials in which the Turquoise is embedded. The matrix can form different structural and colouring patterns and variations in the turquoise from black to brown and yellowish-brown colors. These patterns can drastically alter not only the appeal and the market worth of the turquoise in question.
Here it is also important to state that most of the turquoise available in the market today may have been treated or colored in order to get that certain hue and hence there are more colors of turquoise available than are found in nature.
Care for Turquoise Jewellery
Moreover, the hardness and relative density are not so suitable for the use in some kinds of jewelry which is presented in the second figure. While it is more often than not employed in rings, bracelets, and belt buckles, these uses expose the gem to abrasive and impact forces.
A nice innovation in jewellery design will place the gem in the center of a sturdy metal collar that will shield the sides of the cutting from wear and tear. The bezel should preferably be raised a certain amount to protect the looks of the gem. This is why he keeps his turquoise, whether in a bezel or not, tender with respect. Do not wear in dangerous operations, and store it in such a place that other accessories cannot easily rub against it.
Often, turquoise is porous and can absorb various kinds of liquids. They may include perspiration, body oil, cleaning products or any other liquid by accident that gets in contact with them. These liquids once soaked into the fabric can alter or fade the colour of turquoise. In cases where there is con tact with cosmetics or other possibly damaging liquid, the turquoise needs to be wiped gently with a soft cloth which has been soaked in a very dilute soap solution, then wiped gently with a soft damp cloth with plain water. When the turquoise decolorizes, one should leave it open to air for sometimes before storing it in a jewellery box, preferably should not be exposed to direct sunlight or heat.
Where is Turquoise Stone Found
Turquoise is in areas where there exists low precipitation, and groundwater containing copper and aluminum intermingles with other elements. This, though, is most commonly a secondary mineral, which develops in the weathered zones of the copper deposits. The places known for their turquoise deposits include:The places known for their turquoise deposits include:
1. Southwestern United States: This region for instance, especially Arizona and New Mexico is well famous for its turquoise. The stones of these regions themselves have a bluish green color and a matrix that ranges from brown to black. The Sleeping Beauty Mine based in Arizona is famous for the sky blue turquoise gemstones.
2. Iran (Persia): Persian turquoise which consists of individual pieces of stone of gleaming, deep Edwardian blue akin to the shade of a robin’s egg, without any matrix at all, was prized for its beauty since ancient times. Historians have recognized Nishapur in Iran as one of the oldest and well-known sources of turquoise mines globally.
3. China: Ma’anshan and Hubei provinces have been the producing areas of turquoise for many centuries. Sometimes, Chinese turquoise is of different colors and jades are of lower quality, or is somewhat alike to American or Persian turquoise.
4. Egypt: Egypt discovers oldest mines of turquoise in area of Sinai Peninsula which was exploited from thousands of years ago. The Egyptian turquoise is often greener and is heavily veined compared to the other referenced materials.
5. Tibet: Tibetan turquoise is the item of a gray-green or greenish blue color with a coarse structure; it has been widely used in Tibetan jewelry and religious ornaments.
6. Mexico: Mexico has also come up with turquoise, which is generally darker blue and whose matrix ranges from dark brown to gold colour.
7. Other Locations: At present Australia, Chile, Kazakhstan, Afghanistan, Israel and other regions around the world are also involving in mining of Turquoise.
All these sources yield turquoise that is characterised by different colours and patterns, thus enabling each creation to have a personality of its own.
Physical Properties of Turquoise Gemstone
Here are some key physical properties of the mineral turquoise:Here are some key physical properties of the mineral turquoise:
– Colour – Turquoise blue is normally of blue green hue and varies from sky blue to green blue. It owes its colour to copper compounds that are found in it in large proportion.
– Luster – It possesses a waxy to subvitreous luster hence it is not very shiny.
– Toughness – This is one of the most important gemstone properties, and Lapis has a Mohs hardness of 5/6, this is relatively soft. It can be scraped by cutting blade of knife.
– Crystal structure: Turquoise mostly occurs as cryptocrystalline masses and it is very rare to see the crystals. Rarely it is found as small distinct crystals.
– Of course, it does not have any cleavage plane.
– Crack – The crack is conchoidal which implies that the surfaces of the broken material are ripple like curved.
– Specific gravity – Depending on the type of oil being used, the specific gravity varies from 2. 60 to 2. The second on the left is 2. 90, this indicating that turquoise is quite heavy for a mineral of its nature, being a translucent one.
– Refractive index is abัout the optical properties of the material and the ability of turquoise crystal to bend light is 1. 610 to 1. 650.
– Solubility – Turquoise happens to be insoluble in the majority of acids though is soluble in hydrochloric acid.
– Other properties – while it is possible to observe that turquoise is an opaque to a translucent material. I touched it and it felt smooth, kind of like chewing gum’s texture, or what we usually refer to as waxy. The color can wear out when the vessel is frequently exposed to the fiery red ball in the sky. This can be frequently seen infused with dark matrix material.
Turquoise’s blue green color, its hardness and density relatively between 5-6, non cleavage property and its insolubility in acids give it its identity. For such a purpose like use in jewelries and trinkets it has properties that suit its use.
The Turquoise Mineral Group
The turquoise group describes a group of similar hydrous phosphate minerals containing one or two water molecules with a very similar chemistry. The main minerals in the turquoise group are:The main minerals in the turquoise group are:
– Turquoise – Probably the most famous of the gems, turquoise has a traditional blue-green hue. Of chemical formula is CuAl6(PO4)4(OH)8·4H2O. The copper alum is one of the typical minerals of copper.
– Faustite- A zinc rich turquoise mineral which has the formula: (Zn,Cu)Al6(PO4)4(OH)8·4H2O. Usually, the variety is more of greenish blue.
– Chalcosiderite – Has iron replacing aluminum in the formula. Colored a deeper green. Formula is CuFe6(PO4)4(OH)8·4H2O.
– Planerite: an aluminum rich mineral depleted of magnesium and iron. Formula is
Aluminum phosphate aluminum oxide octahydrate Very pale green Soluble in water.
– Aheylite – a quite exotic turquoise cousin containing iron and zinc. Formula is (Fe,Zn)Al6(PO4)4(OH)8·4H2O
. It’s color is even bluer and has a hint of green in it.
Some key similarities of the turquoise group:Some key similarities of the turquoise group:
– Males most often have blue, blue-green, or greenish colors.
– Products relatively moderate hardness and density
– Cryptocrystalline structures
– Par corneum lusters waxy to subvitreous.
– Conchoidal fractures
– Formatted in copper bearing phosphate orpheral rock
The minerals found in the turquoise group are different in minor chemical makeup and in the hue of the stones’ shade. However, they are almost structurally and visually identical, at least in the second of the two offered types. The most venerated and accredited member of the category is the classical copper aluminum phosphate turquoise.
Turquoise in the United States
Over ninety percent of the turquoise produced in the United States has been found originating from the southwest and most of these have been on or around copper deposits. All the three states of Arizona, New Mexico and Nevada in the United States of America have at one time or the other been the world leading producer of turquoise. SMG increased rapidly it positioned itself among the top five during the late 1970’s and New Mexico held the position until the 1920s, Nevada until the 1980’s and currently Arizona is leading. Mineral sources that have major quantities of turquoise are California, Colorado, Utah, Texas, and Arkansas.
Most of the turquoise mined in the United States is a rather accidental byproduct of copper mining. The large open-pit copper mines remove the upper layers of soil where turquoise is created, to get access to the copper mineral. When turquoise is encountered, its amount and quality is assessed and only if needed, attempts are made to tactfully regain the gem material. If the value for the turquoise serves the purpose of reestablishing the disruption of a billion-dollar mining business, then the turquoise will be extracted. The mining could be done by the abovementioned copper company staff, but more often this job is assigned to independent miners who come to the mine on call, extract turquoise, and get out!
Turquoise Art and Jewellery
Turquoise as a gemstone has always possess great demand for jewelry art and ornamental articles because of its unparallel color and social value. Here are some key facts about turquoise in art and adornment:Here are some key facts about turquoise in art and adornment:
– The history of turquoise dates back to more than 5 thousand years due to its beauty and discovered by such people as Egyptians, Aztecs, Native American people, Persian.
– Due to the outstanding blue-green hue of the stone it is widely used as an ornamental stone. In many cases, it displays veining/mottling that creates additional patterns that are the identify of the stone.
– Role: Turquoise is used universally in jewelries and they include necklaces, bracelets, rings, earrings pins and pendants. These settings could be silver, gold, copper, and bronze among others.
– Jewelry made out of inexpensive nickel-silver and adorned with stones especially turquoise have a significance in the indigenous Native American culture. Through passage of time the stone was deemed to have a holy status due to the perceived abilities as a charm which enhances health, prosperity and offers shields.
– The old Persian used this color in every architecture, vases, carvings and fabrics; the color is famously known as Persian turquoise.
– The greenish-blue crystals and beads are known to be used in tribal jewelry and in Southwestern themed pieces. It is also shaped in to statues, other artifacts like boxes, vases, or other ornamental materials.
– Due to the high demand, authentic turquoise is more expensive as compared to reconstituted or those which have gone through some form of treatment. The highest grade of turquoise is one that is highly blue and has very sparse webbing.
– Some of the eminent zones, which are involved in the production of turquoise jewelry are the South West part of the United States, Iran, Tibet and sinai. There are differences in the pattern of veins in each region’s turquoise.
– Fossilized wood, bones, plastic or glass garnets, and dyed stones are usually cheaper look-alikes of the genuine turquoise stones.
Different between Natural and Treated Turquoise
There are some key differences between natural and treated turquoise:
Natural Turquoise
That have been coformed within mineral deposits for millions of years.
Available in blue green color spectrum depending on the mineral content of the water.
Can have brown or black ‘matrix’ running through he stone and is often associated with Portugal.
Irregular patches of color are missing and thus color distribution is even within the stone.
It operates with the value where blue is most intense and its tone is even.
Treated Turquoise
Chemically altered to enhance color and durability. Common treatments include dyeing, waxing, and impregnating with plastic.
Treatments produce very bright blue and blue-green shades not seen in natural stones.
The matrix veining may appear more uniform than natural stones.
Color is concentrated on the surface and fades over time.
Less valuable than natural stones due to the artificial treatments.
May not be properly disclosed as treated by some sellers.
The most noticeable difference is the overly bright, artificial blue color of many treated turquoises. Examining the vein patterns and luster can also help distinguish natural vs treated
Synthetic and Imitation Turquoise: An Overview
One of the most beautiful and expensive stones in the world for a long time is turquoise. This fish has a blue-green cast to it and patterns that are specific to this fish; these make this fish ideal for ornaments, jewelry, etc. However, real turquoise is extremely rare and pricey, thus people opt for synthetic or imitation turquoise as they are more affordable. The following section of this article will be an attempt to explain what genuine turquoise is, as well as natural, synthetic, and imitation turquoise.
Natural Turquoise
Turquoise in its natural state is created when copper aluminum bearing water seeps into the ground and causes a chemical reaction. This process may take millions of years, and the produced gemstone is unique and considered as precious. Raw turquoise stones can be usually purchased in the south western United States, Mexico and Iran. It is valued for that specific color and the type of markings that can run from a light shade of blue to the deep green hue.
Synthetic Turquoise
Synthetic turquoise is artificial and is manufactured in a laboratory through something known as stabilization. This is a process that entails putting natural turquoise into a clear epoxy resin solution and allowing it to soak into the piece so that it can easily penetrate recesses, cavities, and crevices on the piece’s surface; pressure and heat are then applied in order to cement the epoxy resin permanently. The produced compound looks and feels like natural turquoise, but it is significantly cheaper. There is also the category of synthetic turquoise that can be cured from materials such as ceramic or glass whose colour has been treated to look like natural turquoise.
Imitation Turquoise
Imitation turquoise is any material that is intended to resemble turquoise, but does not contain chemically any of the attributes of natural or synthetic turquoise. This can range from plastic, resin or dyed howlite stone or may be some other material of choice. Faux turquoise is generally applied in fake ornaments or other related goods because it is definitely affordable and can be made in large quantities.
Identifying Natural, Synthetic, and Imitation Turquoise
There is no other way of being certain that the stone or the beads being used is natural turquoise other than going by the. weight of the stone. Natural turquoise is denser than the synthetic or imitation gem materials because they contain more minerals. From the perspective of fashion, it also has the characteristics of having a special texture and appearance that cannot be easily imitated by other artificial or fake leathers.
These materials can be distinguished by stabilization, which should be present in synthetic turquoise. This can be in the form of small voids or discontinuities of the epoxy resin in form of bubbles or lines at injection points. Turquoise of synthetic origin may also be of less varied color than the natural stones.
Bad imitation turquoise can be recognized by its very low price and low weight. It may also appear less yuxtapastel than natural or synthetic turquoise, that is have more even color distribution.
So if there is such a call still looking for the natural one or a synthetic one or an imitation one, superior knowledge of what you are buying is ideal. Natural turquoise is sought after than those made from synthetic or imitation materials since it would have a more appealing and arguably a better quality compared to the synthetically produced materials. From the above analysis, one is in a position to make a decision concerning the kind of turquoise jewelry or any other item that one wants to buy.
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