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  1. Gold jewelry

    The identification finds that gold requires certain experience. Here are only a brief introduction to some identification methods.
    Tievas (1) See color: the purity of higher gold jewelry, the darker the color. It is determined by the color fiber that is usually based on the following colors (in green gold as the standard of green gold, which is only included in ingredients and silver.); Dark red yellow more than 95 % of the purity, light red yellow 90-95 % , Yellow is 80-85 %, 65 % -70 % yellow -green, green color, only 50 % -60 % white, yellow and white 50 % are it. The seven greens, eight yellows, and nine reds are usually referred to for reference. (2) Weighing weight: The proportion of gold is 19.32, which focuses on metals such as silver, copper, lead, zinc, aluminum and other metals. Due to the number of gold and more than 40 % weight than the copper than the copper, the weight ratio of aluminum is 6.1 times. In the hands of the heavy fall of gold jewelry, fake gold jewelry feels buoyancy. This method is not suitable for gold jewelry inlaid gemstones. More gold is softer and low in hardness. You can get nails with light marks. Teeth bite can leave dental marks. High purity is lower than the soft copper of foot gold jewelry:
    The peso (3) It is harder to see the hardness. The hardness of the pure gold that can be tested by bending processing is soft. The lower the purity of the easily bending, the more difficult it is to bend.
    The peso (4) Listening to the sound: The gold that is greater than 99 % purity is thrown on the hard ground, and the sound of clicks will be made without rhyme and sound stretching. The fake or low -colored golden sound is crispy but not dull. Generally, the sound of "Dangdang" is made, but the sound is lingering, and the sound is fierce after landing.
    Thevas (5) Fire: The hot accessories are recognized (do not melt the jewelry), cool, if the surface is still in the original gold color, observe its color change; On it, it is not gold. The lower, the general fineness, the color is dark, and the whole black, which shows fake gold jewelry.
    Thevas (6) See the mark: Domestic gold jewelry is all customized and prepared by international standards, and kill Note to mark it as "24K" to indicate "all red" or "gold"; Whoever does not follow the prescribed K -gold sealing number is lower. At present, illegal elements are commonly used in the society to make fake cards, imitation stamps, and use scarcity, gold, copper, and even pretending to be real gold, gold jewelry, and based on samples to determine authenticity and purity to determine a comprehensive judgment.

    The platinum and platinum

    simple facts, platinum is an element, platinum is a mixture. Platinum: Platinum (PT), which is more stable than gold, and the price is more expensive than gold. It is used to make high -end jewelry. The products of "PT900" or "PT950" jewelery representatives represent the platinum content of 90 % and 95 %, respectively. Generally, pure platinum jewelry is 95 %, while the purity of 18K gold is only 75 %. Any metal cannot be completely pure, and the existence of impurities is mixed with other metals. Platinum is almost no impurities, high purity, and therefore will not fade or change color. It can stay in the gloss of time. Platinum pure white luster can realize the good reflection of diamonds. Rare than gold, 35 times that of platinum, in the world, only mining in very few places, mainly in South Africa and Russia, as well as a few areas of Zimbabwe, Canada and South America. Each year, only 88 tons of platinum jewelry is made and 2700 tons of gold. The fewer platinum, the less gold ore than the density and weight of the eternal platinum of 10 to 1, making it more durable than other jewelry metals. All valuable metals will leave scratches, and platinum is no exception. However, the scratches of platinum metal will not reduce the volume, and the scratches will bring gold wear and reduce the volume of gold. If there is a scratch that can be visible to the naked eye, the qualified jewelry dealer can brighten it again. Platinum: Gold (AU), and contains a small amount of other metals, etc. Platinum high 75 % purity can be seen in the market. In a mixture made of 75 % gold, 25 % silver, nickel, copper and other metals, K is platinum. It is marked with 18K platinum, 750 gold, and 750 grams. How to identify platinum and other platinum such as platinum and white gold and platinum K gold jewelry is mainly to see the inner ring logo and marked the buckle logo in the necklace. It contains more than 990 ‰ platinum jewelry platinum colors, usually "foot platinum" marks. The "P950" mark means 950 ‰ platinum. KK Bai K Jinlai represents numbers. K is a gold content, such as 18K white, 750 grams, 750 gold, AU750 words express the content of white K gold 18K gold. The purity of platinum jewelry is not expressed as "K". White K gold sold on the market, white K gold jewelry is not platinum jewelry. We ask for operating invoices to purchase platinum jewelry, and write clearly on the invoice is 18K platinum or platinum. It is best to indicate the weight of the jewelry, so that the incident of fraud is easier to claim.

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