In the word "wander" the content of my confinement blog.Divagar, the dictionary is to wander, to walk from one side to the other. In this blog I try to share something of how much I write some music that I like and, also, my passion for stones, which I studied for many years. It is just a ramble .. A July 21, the day of my twenty-first birthday, I got an alexandrite. It was mounted on a gem, the stone was simply stuck in a box of glass over a white cotton. The person who gave it to me, that is no longer with us, I said, 'Take a Alexandrite, appreciate, is a very beautiful gem and hard to find, you'll see, you'll see The value of gemstones can vary greatly between them, depending on the three characteristics to value the stones, rarity, hardness, and beauty. However as a general rule, semi-precious stones are much easier to find than gems, making it much easier to find semi-precious stones very clean, with bright colors and large. QUARTZ: Quartz is the pure form of rock crystal, composed of silicate oxide is colorless, its hardness is 7 mohs. The clear quartz is called rock crystal and because there are large deposits of this is not very expensive. However, the color variations are highly prized quartz especially, Amethyst (purple), rose quartz, citrine (yellow transparent), smoky quartz (gray or dark brown), blue quartz, Agate, Onyx (black), Jasper, and opal. AMETHYST: This is the most precious form of quartz that is, the purple color of amethyst is generated from the mixture of iron with magnesium in the quartz. Because this form of quartz the mohs hardness is 7. In ancient times, amethyst was considered a gemstone because of its rarity and beauty, but after the discovery of large oilfields in 1800 in Brazil (the largest producer of today's amethyst) grew much availability and cheaper price. Its original and attractive amethyst color makes today is one of the most valued gemstones. A good amethyst should be clear, and the more intense the color will be more valuable it is. Alexandrite: Alexandrite is one of the most exotic gemstones and rare in the world. By day, has a resemblance to the "green fire" of emeralds and at night, takes the brilliant red of the ruby shine. Alexandrite was first discovered around 1830, the alexandrite value birthday of Czar Alexander of Russia, who took the greatest source of alexandrite nombre.La the world is located in the state of Minas Gerais, Brazil. In 1987, the Lavra of hematite mine was found the largest deposits of alexandrite in the world. In the past, Russia was one of the largest sources of alexandrite, today, however, deposits of Russia are almost exhausted, due to intense extraction have suffered. In 1993, he found another source of this extraordinary gemstone near the border between Tanzania and Mozambique. The color change is not a phenomenon unique to Alexandrite, but the extremes reached by the change of color in this gemstone surpass all other stones. When there is alexandrite in daylight or fluorescent light, its color ranges from medium green and blue, but when viewed under incandescent light, its color is red violet. Alexandrite is tough enough 8mohs. Its hardness second only to precious stones. The degree of color change is the first point and the most important when calculating the value of alexandrite. CITRINE: Citrine is another form of quartz is usually colored yellow, orange, amber and gold, the color comes from iron mixed with quartz. Its hardness is 7 mohs like amethyst. The features that are looking to value a citrine is its clarity and rich color yellow, due to its abundance is much cheaper than its relatives consist of quartz, like amethyst and onyx. The main deposits of Citrine are found in Brazil. ONYX: Onyx is an opaque form of quartz, formed by the mixture of quartz, silicon dioxide. Generally black, onyx can be presented in black-white, gray and reddish brown. Onix hardness is 7 mohs. Onyx is opaque, which means that no light passes through it, this feature is usually cut into a circular shape called cabochon polished thin. OPAL: Opal is made of the same ingredients as quartz, containing nothing but water pressure was not enough to become glass. The result is softer than quartz with a hardness of 6 Mohs. The color is white opal radiant, and because of its texture reflects light waves in different shades being the only stone in the world that has that quality. The main deposits of opal found in Australia. Like all non-transparent stones, opal is usually cut into a thin circle and polished cabochon called. Jasper: Jasper is another variation of quartz mixed with iron oxides, usually opaque yellowish, but there are red and brown colors. Its hardness is 7mohs. Aquamarine: Aquamarine is a variation of Beryllium main component of the emerald, nothing but mixed with iron. Its hardness is 8 mohs, making it very durable. The colors of aquamarine can be quite varied, but the more valuable the clear blue tones, giving reference to the clear water. The aquamarines with good color and transparency are some of the best semi-precious stones valued at present. Brazil is the largest producer of these stones. The main court is given these stones is the cut "emerald" because they can best protect the stone against chipping. GARNET: Due to its red garnet is the ruby economic substitute. The garnet is composed of a mixture of silicates of aluminum, iron and magnesium, giving these metals varied shades of red, and even other colors but never blue. The hardness of garnet is 7 mohs. Because there are many deposits of garnet, and the ease of finding large garnets with very good clarity and vibrant color is an option often used in commercial jewelry. Peridot: Peridot is a crystal made of magnesium, iron and silicon. The colors of peridot can vary greatly depending on the proportion of its ingredients. The color of the peridot is the quality most sought after and can range from yellow and green colors are valued over the lime green and olive green. Peridot has 6 mohs hardness, due to its great clarity is very suitable to make cuts of many faces to reflect light. The largest deposits of peridot are found in the area of Greece. Tanzanite: Tanzanite is a crystal formed of a mineral called ziosita, which is mixed with silicon, calcium and aluminum. The hardness of Tanzanite is 6 mohs. Tanzanite is a gemstone discovered in 1967, and so far found only in Tanzania. Since its discovery of tanzanite has been very popular due to its original blue-purple uniform. Topaz: Topaz is a crystal from a mixture of silicon, aluminum, fluorine, and hydroxyl. Topaz is a gemstone fairly traded, particularly the blue topaz. Although the blue topaz is the most expensive, really pure topaz is yellow. There may be a wide variety of colors of topaz, blue, yellow, pink, and coffee are the most popular. The clarity and mohs hardness 8 topaz, topaz have made a great gem for jewelry. Zircon: Zircon is a mineral crystal composite magmatic nesosilicatos is a close relative of topaz. Zircon is colorless, sometimes with shades of brown, gray, green or red, its hardness is 7 mohs. TURQUOISE: Turquoise is a blue-green mineral. It is a copper aluminum phosphate. It was highly prized as ornamental gemstone and for thousands of years because of their color to none. The word turquoise is very old and it is thought that this confusion arises because in Turkey there is turquoise, but they were sold there, and then the gem was associated with that country. Even the finest of turquoise is quite fragile, reaching a maximum hardness of 6 Mohs. The bright turquoise is waxy to almost glassy, and is usually opaque, although it may be semi-translucent in small sections. Color is as variable as the rest of their properties, ranging from white to dark blue and sky blue and from blue-green to green-yellow. Turquoise is among the oldest gems to be learned. Most extractions currently remains on hand, with little or no mechanization. However, sometimes it is obtained as a byproduct of copper mining on a large scale, especially in the United States. In Iran and in the Sinai are the most important deposits of turquoise and best colors for jewelry, there are other important sites but on a smaller scale in Spain and China. The shades of turquoise have been appreciated in many important cultures of antiquity, have adorned the rulers of ancient Egypt, the Aztecs, the Persians, the Indus Valley civilization and culture of ancient China. Despite being one of the oldest gems, probably the first to be introduced to Europe through Turkey, along with other products from the Silk Road, turquoise did not become important until an ornamental stone century XIV. The richness of color is the determining factor in the value of a turquoise: In general, most desirable color is dark blue, however, Tibet is rather more greenish blue. Being a phosphate material, turquoise is inherently fragile and sensitive to solvents, perfumes and other cosmetics may alter its color, like oily skin. Prolonged exposure to sunlight may also discolor or dehydrate. You can use these HTML tags and attributes: