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① to see color. To see thepandora charmcolor is pure, rich and gaudy, uniform, and the condenser flashlight to check whether there are hidden variegated. A rich ruby ??color, pure, uniform, impurity small better. Emerald emerald green with a higher price, followed by red, purple. Especially fresh green, slightlybead ukyellow tone with one-third water seedlings Green (also known as "Yangmiao green), followed by the emerald green river green, glossy dark green, are green uniform distribution.
② The transparency. Observed under a bright light,charm uktransparency as high as possible.
③ listen to the sound. Percussion clear and melodious sound is preferred.
(4) observe Chui and stone flowers. Light observation, the flashcharm bracelet charmsof other mineral grains in the emerald (Tsui), and often group the massive white, said the stone flower. Both with less as well.
⑤ to see cracks and dark spots. Cracks in some of the ore,ilovebeadsbut also some processing caused by small as well; spots black spots everywhere in the emerald, but also few and small as well.
⑥ look at the processing level. To the smooth, polished surface, the shape is better.

The color is the assessmentpandora charmof water emerald factors to achieve good color standard is: are strong, positive, are.
Are: refers to the range of tones, based on the proportion of the main colorbead ukand the color, that is to be pure green, not mixed with other colors. Often contaminated oil green blue values ??will fall. Concentrated: refers to the depth of color, emerald green in terms of concentration is preferably between 70% and 80%, 90% have too thick a. Yang: refers to thecharm ukcolor of jade, bright sun brightness of emerald bright emerald with green and black or gray percentage. Will be bright green in color, including black or gray more color on the gray, experts tend to take the image to represent the color of the bright sun. For example: the boxwoodcharm bracelet charmsgreen, parrot green onions heart green pepper, green are the color of the bright sun. Spinach green, oil green, the river is green, dark green, refers to the color dull dark green. More fresh sun, emerald, the higher the value. Are: refers to the color of the emerald distribution uniformity. Theilovebeadsemerald color of the general distribution is uneven, such as color distribution Jade really is not an easy task. The best color: green pure green concentration at 70% -80%, Yan Yang bright, uniform color distribution, such high-grade jade, experts used to call the old crater species.

A lot of good zirconpandora saleand diamonds with the naked eye is difficult to distinguish one from the
Zircon non-homogeneous body, look down from ponderingpandora beadsgood Zirconium carved stone face stone top surface can see the bottom of the facet with a clear double shadow, the Diamond does not have this double shadow.
Second, the diamond hardness of 10, while the hardness of zircon.pandora charmsTo characterize the hardness of the nine standard hardness zircon moment does not move, can with the diamond difference.
Third, the proportion of the diamonds of 3.52, while the proportionpandora UKof zircon is more than $ 420.

The extraction of Zr,pandora saleHf, mineral raw materials. The major industrial uses of zircon are as follows: refractory; sand material; ceramic materials; gem materials.
The zircon extremely high temperature, the melting point of 2750. And acid corrosion. 80% of the zircon in the world for the foundry industry, ceramics, glass, industrial and manufacturing refractory. A small amount of zircon for the ferroalloy, pharmaceutical,pandora beadspaint, leather, abrasive, chemical and nuclear industry. A very small amount of zircon used for smelting metal zirconium.
Containing ZrO265 ~ 66% of zircon sand because of the refractory (melting point 2500 ° C and above)pandora charmsdirectly used as a foundry-ferrous metal casting material. Zircon sand has a lower thermal expansion, high thermal conductivity, strong chemical stability than other ordinary refractory materials, high-quality zircon and other types of adhesive with good adhesion for the foundry industry. Zircon sand is also used as a glass kiln of bricks. The zircon sand and zircon powder mixed with other refractory materials for other purposes.
Zircon and dolomite at high temperatures the reaction of zirconiumpandora braceletdioxide or zirconia oxygen species (ZrO2). The zirconia oxygen is also a high-quality refractory material, although the crystal varies with temperature. The stability of the zirconia oxygen also contains a small amount of magnesium, calcium, scandium, or yttrium oxide, the stability of the zirconium-oxygen temperature close to 2700, it thermal shock resistance, zircon reaction in some metallurgical applications. The low thermal conductivity of the stability of the zirconia oxygen, industrial zirconia oxygen, hafnium oxide for refractory material to use is harmless.
Form of zirconium metal, mainly used in chemical industry and the nuclear reactor industry, as well as for applications requiring corrosion resistance, high temperature, special fusion performance or other industrial absorption of special neutron, about 8 percent of total consumption in the United States, zirconium in these industries, the only meaningful application of hafnium metal is used in nuclear reactors in warships.
Zirconium metal with multi-stage refining method. The first zircon in the furnace and coke reactivity hydrocarbons zirconium chloride, and then generate four zirconium dichloride. Magnesium reduction zirconium tetrachloride France (Thekrollprocess,) including the reduction of carbon tetrachloride, magnesium metal in an inert gas, used to obtain the sponge-like zirconium metal. With refining high-purity zirconium metal iodide heat from the solution, in the process, relying on the metal and iodine vapor to the reaction temperature of 200 ° C, and volatile iodine is sent to the connector, so that the zirconium become volatile form of iodine, with most of the impurities separation. About the temperature of 1300 ° C, iodide is separated in a heated filament. Filament attached to a high-purity zirconium. Iodine released from the filament in the transfer of this product called zirconium crystal bar.

Zircon is a common gem minerals, zirconpandora charm often contain radioactive elements, and therefore some zircon radioactive, especially green zircon, it is best not to wear as jewelry, such zircon is likely to have radioactive. And if it is jewelry with zircon and low zircon is also not acceptable,bead uklow-type zircon is due to the radioactive crystal becomes amorphous zircon, is also radioactive.
Evaluation and selection of zircon. The main basis for the color,charm ukclarity, cut, style and weight. Zircon, the most popular color is colorless and blue, blue higher value. Colorless zircon: the best quality varieties of gem-quality zircon, because the dispersion is high, colorless, often used for diamond substitutes. Blue zircon:charm bracelet charmszircon of high-quality varieties, the highest value, with bright blue, transparent no time much loved and high dispersion. Zircon is brittle hardness than diamonds as jewelry to wearilovebeadswhen you have to be careful.

Zircon is widelypandora charmdistributed in acidic and alkaline magmatic rocks, offenders are usually output in the mafic and intermediate rock.
The Quartet short column, the Quartet dual cone. Hardness,bead ukadamantine luster. Distinguish between hardness and rutile, rutile complete cleavage. And the difference between cassiterite, zircon is less dense. The monazite difference zircon with the Quartet columnar shape, and greater hardness.
The main identificationcharm uk features of zircon: the high refractive index, and gloss, high birefringence, high-density, high dispersion and the typical spectral characteristics.
Zircon rich colors, and the degree of color depth changes,charm bracelet charmstherefore, zircon canbe mixed with the gem of any color, transparency. Most easily mixed gem diamond, spinel, chrysoberyl, sapphire, ruby??,ilovebeadsgarnet, zircon gemstone, prop shot stone.

Zircon is apandora charmssilicate mineral, which is the main ore to refined metal zirconium. Zircon is widely present in the acid igneous rocks, also produced inPandora beadsthe metamorphic rocks and other sediments. Zircon’s chemical properties are very stable and can also be seen in the river gravel gem zircon. Zircon has a variety of different zircon have different colors such as red, yellow, orange, brown, green or colorless andsilver charmstransparent. Zircon cut gem like a diamond. Zircon in the past also called zircon or hyacinth stone. Zircon can withstand temperatures above 3000 ℃, and therefore can be used as the insulation material of thecharms braceletsspacecraft.

Agate quality and economic value of the judgment,pandora saleare generally recognized to the naked eye as a major means of modern science and technology is developed, a lot of variety of jade identification of equipment, but first, very convenient to use these instruments in the trading process, the second is not solve the problem,pandora beadsthe reason is very simple, will be subject to the limitations of the environment, if the judgment of the merits and economic value of the agate, that instrument would be useless. Trading site can not be complex equipment operations, the naked eye identification is always an extremelypandora charmsimportant way. A wide variety of agate, known as "thousands of samples agate kinds of jade." The said identification method, usually to the pattern with color, transparency, cracks, impurities, sand heart and block re-grading standards, in addition to the water tank agate the most precious,pandora Australiagenerally with a pretty color harmony raw materials to share. Agate is commonly used in inlaid jewelry and carvings of a gem.

Plum jade contains a variety of trace elements andpandora salemagical desperate Maifan rock, long-term use or contact with plum jade products, anti-cancer, anti-hemorrhoid medical health effects, is a beautiful, practical, longevity and ancient Cheung jade. Plum Jade performance strange, tableware made ??of it, the dog days buckle intopandora beadsthe meat for three days does not rot, and thus has a summer without heat, cold but not cool "features, the reputation of the" natural refrigerator ". Recent data indicate that plum jade and medical stone known as the "longevity stone", "health stone", contains a similar, beneficial to humanpandora charmsbody iron. Zinc, sodium, magnesium calcium copper. Barium molybdenum and other trace elements. These elements are inhaled, can play to regulate the body’s metabolism to accelerate the ion exchange, promote blood circulation, to supplement the lack of efficacy of the human elementpandora canadarequired. Wear or use long-term plum jade jade ornaments and utensils with anti-cancer, anti-hemorrhoid medical care, the longevity effect. Its efficacy is equivalent to twice the medical stone. Plum jade elegant, stable, generous unique personality and jade not curative health functions Yu sector shine. In addition, Plum jade containing magnetite body, and thus has a certain magnetism. Peidai Mei flower jade can form a weak magnetic field around the body, can be effectively reduced to reduce the electromagnetic radiation from life. Thereby reducing the chance of cancer and leukemia incidence.

The volcanicpandora saleformation of plum jade in the condensation process, large amounts of gas in the rock formation of many strange pores, these pores plum jade crafts filling laterpandora beadsgenerated a variety of minerals, the formation of the so-called geological almond-shaped andesite. Agate filling of the "almond" (the stomata) If the iron is red; epidote filling, it is yellow-green; dark green chlorite filling; as calcite or quartz filling whitepandora charmsor colorless and transparent. When Tamaryo polished, these are filled with a variety of fossil stomata, formed like plum flowers. Often twists and turns of fine cracks, pores between its mineral filling, they formed a pattern of "plum" branches. In the andesite black or dark gray background,pandora UKit shows a wonderful picture of Zhifan spend Mao, is lovely.