Goud

Goud dat gebruikt wordt in de juwelenindustrie is eigenlijk een legering van goud en andere metalen. Dit komt voornamelijk doordat puur goud een te zacht materiaal is. De toevoeging van ligaturen maakt het mogelijk om bepaalde chemische en fysische eigenschappen te bereiken, waardoor het edele metaal geschikt wordt voor het maken van sieraden die bestand zijn tegen vervorming. Ligaturen beïnvloeden ook de kleur van de legering. Afhankelijk van de verhouding waarin ze aan goud zijn toegevoegd, kun je een legering met verschillende kleuren krijgen. De exacte samenstelling van de legering wordt bepaald door GOST 30649-99 en GOST P 51152-98, die de verhouding van metalen die aan goud worden toegevoegd regelen. Legeringen worden gelabeld met letters en cijfers. Goud wordt aangeduid met "Zl", zilver met "Sr", koper met "M", zink met "Ts", platina met "Pl", palladium met "Pd" en nikkel met "N". Het getal geeft de % toegevoegde onzuiverheden aan. Bijvoorbeeld, goud ZlSrM 585-80 is 585 goud, waaraan 8% zilver en 33,5% koper is toegevoegd. De meest voorkomende kleuren goud In de juwelenindustrie...

Helaas voor alle liefhebbers van gouden sieraden hebben gouden sieraden de neiging om donkerder te worden als ze gedragen worden. Dit komt zowel door oxidatie van de ligaturen (toevoegingen aan goud die zorgen voor de hardheid) als door algemene vervuiling. Zweet, vettige huidafscheidingen, vuil, wasmiddelresten, cosmetica - dit alles hoopt zich geleidelijk op op sieraden en ontneemt ze hun oude glans. Hoe je gouden sieraden thuis kunt schoonmaken, vertellen we je in ons artikel. Goud schoonmaken met ammoniak Ouranalcohol is niet alleen in staat om een persoon, maar ook gouden sieraden. Volg de onderstaande punten om dit te doen. Los 5-7 druppels ammonia op in een glas water. Dompel de gouden sieraden 30 minuten in de oplossing. Haal het sieraad eruit en spoel het af onder stromend water. Droog de sieraden af en veeg ze daarna af met een speciale doek van microvezel, vilt of flanel om ze te laten glanzen. Let op! Nafta alcohol heeft een penetrante geur. Vergeet niet om de ruimte goed te ventileren als je goud ermee schoonmaakt! Tafelazijn Deze methode is geschikt ...

Afbeelding 1. Aangetaste gouden sieraden

Alle gouden sieraden die we dragen kunnen na verloop van tijd zwart worden: oorbellen, ringen, hangers, kettingen, armbanden. Het is ongetwijfeld erg frustrerend. Laten we eens kijken naar de redenen waarom goud donker wordt. Laten we proberen te begrijpen of het mogelijk is om dit proces te voorkomen of te vertragen, en hoe we dat moeten doen.

Volksvoorspellingen

Bij de mensen zijn er veel verklaringen voor dit feit, en ze zijn allemaal negatief, je kunt zelfs zeggen "onheilspellend". Volgens omens, als donkere gebieden verscheen op de gouden sieraden, betekent dit dat de eigenaar werd opgelegd bederf of boze oog. Een andere veel voorkomende misvatting is dat het zwart worden van gouden sieraden aangeeft dat er zich een ernstige ziekte ontwikkelt in het menselijk lichaam. In feite is dit alles slechts een vooroordeel dat niets met de werkelijkheid te maken heeft.

Wetenschappelijke verklaringen

Laten we volksgeloof achter ons laten en naar de echte redenen gaan waarom goud zwart wordt op het menselijk lichaam.

Goud wordt donkerder door oxidatie van de ligaturen in de...

A favorite jewelry box, with gold and silver jewelry lovingly arranged in soft nests. You probably have one of those. And how do you choose what to wear today? On what principle? It is clear that jewelry is selected to the outfit, eye color, makeup, but the question is about something else - about appropriateness. Chains, bracelets, rings and earrings made of silver - for every day, and gold - on special occasions, right? But sometimes it sure feels like wearing both together. Is it possible to wear gold and silver at the same time or should you not? Let's find out. Why it is considered that gold and silver can not be worn together Until recently, wearing gold and silver jewelry together was considered an absolute taboo and a mauvais. Looking ahead, let's say that the situation is gradually changing, and these changes were initiated by daredevil jewelers, who are not able to overcome any taboos. In the meantime, let's go back a few years and listen to the arguments that were …

Figure 1. Testing gold for authenticity

Why are eternal values called eternal? Yes, because both in crises and in periods of prosperity they do not lose their importance. And when hard times come, people try to save their money not in "iPhones" and cryptocurrencies, but in gold. However, this also applies to good times - all financial guides consider the precious metal as a strategic asset, and recommend investors to keep at least 5-10% of their portfolio in gold.

Jewelry is also an investment. First of all, it is an asset, and therefore their purchase should be approached as pragmatically as possible. But what if you are offered to buy a bracelet or a ring "by hand" at a price lower than in a jewelry store or pawnshop? Be vigilant! And be sure to check the product, even if it is stamped. How to check the authenticity of gold at home? This is what we will talk about in this article.

Ways to check the authenticity of gold

The quest…

Fig 1. How to recognize gold or gilding in front of you

As long as mankind has existed, so long has deception lived in the world. Buying gold jewelry "by hand", on the Internet or in some other dubious places is always fraught with risk. For example, a diamond can be tested as a fianite, zircon, muassanite, which is very similar to a diamond, but costs 20 times cheaper. Or even just a piece of crystal glass. Well, and under the bright shine of gold can hide inexpensive silver or ordinary steel. And doubly offensive, if for a modest bijouterie you will pay as a luxury "jewelry".

Another option is also possible, less criminal. Suppose you inherited jewelry, and you want to know whether they are real or only imitation. Or maybe a ring or earrings were given to you as a gift by an admirer? A gift horse, of course, do not look in the teeth, but still curious - how highly you are valued, and how seriously they treat you? Simply put, is the jewel…

Figure 1. Platinum and gold bars

There are still those who are sure that platinum and white gold are one and the same. The misconception appeared because visually they are similar - they are both silver in color, shine spectacularly, are used in jewelry, and are not cheap. But despite the similarities, they are not the same metal. If you want to know what is the difference between platinum and white gold, as well as get sound advice on which of them is better to choose for a ring or earrings - read our article.

What is white gold

Fig 2. Nugget of gold

To begin with, let's remember the definition: "Gold (Aurum) is a noble yellow metal, the seventy-ninth element of Mendeleev's periodic table". The key here is "yellow color". There is not and cannot be white gold in nature. What is presented in jewelry showcases is an alloy of gold and mixtures of other metals.

So, if the ring has a 750 grade (the most common)…

When a loved one passes away, many heirs do not know what to do with their belongings. After 40 days have passed since the day of death, the clothes and shoes of the deceased, of course, can be given away or donated to the church. But what should the heirs do with the jewelry? How to act correctly? Is it possible to wear gold after a deceased relative, is it not dangerous, will not be perceived as sacrilege?

Superstitions and omens

People treat the completion of the earthly path with mystical horror. And in folk folklore, any contact with the otherworld, even through the things of the deceased, often carries negativity.

Hence the complex attitude to the inheritance of the deceased, and a lot of unsupported beliefs related to the disposal of their property. Is it possible to wear the gold of a deceased person, according to superstitious people? Many believe that no. They say that the things of the deceased carry the energy of death …

Fig 1. Which gold is better to choose: white or yellow gold White or yellow? The eternal question that makes us freeze in front of the jewelry store window, where rings, earrings, bracelets, brooches, chains and necklaces shine mesmerizingly. How beautifully the diamonds shine in a white gold ring! And this heavy yellow metal bracelet with large garnets strikes some barbaric unbridled luxury. How perfect it would look with your favorite evening dress! What to choose? What is the difference between white gold and ordinary yellow gold? To begin with, let's understand the difference between white gold and yellow gold. In general, the "chameleonic" shade of gold is a mystery for the uninitiated. Copper is always red, iron is gray, mercury, platinum and silver are white. But gold can be white, yellow and red. What's this phantasmagoria with changing suits? In fact, it's simple. The usual natural color of gold is yellow. But "jewelry" is never made of pure metal: it is too soft. Yo…

Fig 1. Which gold is better to choose: red or yellow gold There is something magical in the shine of gold. Since ancient times its shine attracts attention, mesmerizes, awakens the desire to possess. Except that in ancient times the shine of this metal was exclusively golden, and today there are ornaments of yellow, red and other colors on sale. If you are faced with the task of buying a ring or earrings, the question arises - what gold is better to choose for jewelry red or yellow? And, in fact, what is the difference between them in general, except for the color? Which one to prefer? We hope this article will help you decide and do not regret the choice. What is the difference between red gold and yellow gold To begin with, pure aurum (the chemical element Au) is practically not used in the jewelry industry. The noble metal is too plastic, easily deformed, scratched, bent, broken, and therefore not suitable for jewelry. To wear a 998 or 999 ring is like going to a ball wea…