Kulta

Koruteollisuudessa käytetty kulta on itse asiassa kullan ja muiden metallien seos. Tämä johtuu pääasiassa siitä, että puhdas kulta on liian pehmeä materiaali. Liimattavien aineiden lisäämisen avulla saavutetaan tietyt kemialliset ja fysikaaliset ominaisuudet, jolloin jalometalli soveltuu muodonmuutoksia kestävien korujen valmistukseen. Ligatuurit vaikuttavat myös seoksen väriin. Riippuen siitä, missä suhteessa niitä on lisätty kultaan, voidaan saada eriväristä seosta. Seoksen tarkka koostumus määräytyy GOST 30649-99 ja GOST P 51152-98 -standardien mukaan, jotka säätelevät kultaan lisättyjen metallien osuuksia. Seokset merkitään kirjaimilla ja numeroilla. Kulta merkitään "Zl", hopea "Sr", kupari "M", sinkki "Ts", platina "Pl", palladium "Pd" ja nikkeli "N". Luku tarkoittaa lisättyjen epäpuhtauksien määrää %. Esimerkiksi kulta ZlSrM 585-80 on 585 kultaa, johon on lisätty 8% hopeaa ja 33,5% kuparia. Kullan yleisimmät värit Koruteollisuudessa...

Kaikkien kultakorujen ystävien valitettavasti kultakoruilla on taipumus tummua, kun niitä käytetään. Tämä johtuu sekä ligatuurien (kullan kovuutta lisäävät lisäaineet) hapettumisesta että yleisestä likaantumisesta. Hiki, rasvaiset ihoeritteet, lika, pesuainejäämät, kosmetiikka - kaikki tämä kerääntyy vähitellen koruihin ja vie niiltä entisen kiiltonsa. Miten puhdistaa kultakorut kotona, kerromme artikkelissamme. Kullan puhdistaminen ammoniakilla Meidänanalkoholi pystyy paitsi tuomaan henkilön, myös kultakoruja. Voit tehdä tämän noudattamalla alla olevia kohtia. Liuota 5-7 tippaa ammoniakkia lasilliseen vettä. Kasta kultakorut liuokseen 30 minuutiksi. Ota koru pois ja huuhtele se juoksevan veden alla. Pyyhi koru kuivaksi ja pyyhi sitten kiiltäväksi mikrokuidusta, huovasta tai flanellista valmistetulla erikoisliinalla. Huomaa! Naphtha-alkoholilla on pistävä haju. Kun puhdistat kultaa sillä, älä unohda tuulettaa huonetta hyvin! Pöytäetikka Tämä menetelmä sopii ...

Kuva 1. Tahrattuja kultakoruja

Kaikki käyttämämme kultakorut voivat ajan myötä mustua: korvakorut, sormukset, riipukset, ketjut ja rannekorut. Se on epäilemättä hyvin turhauttavaa. Tarkastellaanpa syitä, miksi kulta tummuu. Yritetään ymmärtää, onko mahdollista estää tai hidastaa tätä prosessia ja miten se tehdään.

Kansan ennusmerkit

Ihmisillä on monia selityksiä tälle tosiasialle, ja kaikki ne ovat negatiivisia, jopa "pahaenteisiä". Omenoiden mukaan, jos kultakoruihin ilmestyy tummia alueita, se tarkoittaa, että sen omistajalle on määrätty pilaantumista tai pahaa silmää. Toinen yleinen väärinkäsitys on, että kultakorujen mustuminen osoittaa, että ihmiskehossa on kehittymässä vakava sairaus. Itse asiassa kaikki tämä on vain ennakkoluulo, jolla ei ole mitään tekemistä todellisuuden kanssa.

Tieteelliset selitykset

Jätetään kansanuskomukset ja siirrytään todellisiin syihin, miksi kulta muuttuu mustaksi ihmiskehossa.

Kulta tummuu siihen sisältyvien ligatuurien hapettumisen vuoksi....

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…