الذهب

الذهب المستخدم في صناعة المجوهرات هو في الواقع سبيكة من الذهب والمعادن الأخرى. ويرجع ذلك أساساً إلى حقيقة أن الذهب النقي مادة ناعمة للغاية. وتتيح إضافة الأربطة تحقيق خصائص كيميائية وفيزيائية معينة، مما يجعل المعدن النبيل مناسبًا لصناعة المجوهرات المقاومة للتشوه. تؤثر الأربطة أيضاً على لون السبيكة. واعتماداً على النسبة التي أضيفت بها إلى الذهب، يمكنك الحصول على سبيكة بألوان مختلفة. يتم تحديد التركيب الدقيق للسبيكة من خلال GOST 30649-99 و GOST P 51152-98، اللذان ينظمان نسب المعادن المضافة إلى الذهب. يتم تسمية السبائك بأحرف وأرقام. يُرمز للذهب بالحروف "Zl"، والفضة بالحروف "Sr"، والنحاس بالحروف "M"، والزنك بالحروف "Ts"، والبلاتين بالحروف "Pl"، والبلاديوم بالحروف "Pd"، والنيكل بالحروف "N". يشير الرقم إلى % من الشوائب المضافة. على سبيل المثال، الذهب ZlSrM 585-80 هو 585 ذهب، مع إضافة 8% فضة و33.5% نحاس. ألوان الذهب الأكثر شيوعاً في صناعة المجوهرات...

لسوء حظ جميع عشاق المجوهرات الذهبية، تميل المجوهرات الذهبية إلى اللون الداكن مع ارتدائها. ويرجع ذلك إلى كل من أكسدة الأربطة (المواد المضافة إلى الذهب التي توفر صلابته) والتلوث العام. العرق وإفرازات الجلد الدهنية والأوساخ وبقايا المنظفات ومستحضرات التجميل - كل هذا يتراكم تدريجياً على المجوهرات ويحرمها من بريقها السابق. سنخبرك في مقالنا عن كيفية تنظيف المجوهرات الذهبية في المنزل. تنظيف الذهب بالأمونيا لا يستطيع كحولنا أن يجلب الشخص فقط، ولكن أيضًا المجوهرات الذهبية. للقيام بذلك، اتبع النقاط أدناه. قم بإذابة 5-7 قطرات من الأمونيا في كوب من الماء. اغمس المجوهرات الذهبية في المحلول لمدة 30 دقيقة. أخرج القطعة واشطفها تحت الماء الجاري. امسح المجوهرات حتى تجف، ثم امسحها بقطعة قماش خاصة مصنوعة من الألياف الدقيقة أو اللباد أو الفانيلا لتلميعها. يُرجى ملاحظة! كحول النفثا له رائحة نفاذة. عند تنظيف الذهب به، لا تنسى تهوية الغرفة جيدًا! خل المائدة هذه الطريقة مناسبة ...

الشكل 1. مجوهرات ذهبية مشوّهة

يمكن لأي مجوهرات ذهبية نرتديها أن تتحول إلى اللون الأسود مع مرور الوقت: الأقراط والخواتم والمعلقات والسلاسل والأساور. إنه بلا شك أمر محبط للغاية. لننظر في أسباب تحول الذهب إلى اللون الأسود. دعنا نحاول فهم ما إذا كان من الممكن منع أو إبطاء هذه العملية وكيفية القيام بذلك.

الطوالع الشعبية

في الناس تفسيرات كثيرة لهذه الحقيقة، وكلها تفسيرات سلبية، بل يمكنك أن تقول "مشؤومة". فبحسب الطوالع، إذا ظهرت مناطق سوداء على الحلي الذهبية، فهذا يعني أن صاحبها قد أصابته عاهة أو عين شريرة. هناك اعتقاد خاطئ شائع آخر هو أن اسوداد المجوهرات الذهبية يشير إلى أن مرضًا خطيرًا يتطور في جسم الإنسان. في الواقع، كل هذا مجرد حكم مسبق لا علاقة له بالواقع.

التفسيرات العلمية

دعونا نترك المعتقدات الشعبية وننتقل إلى الأسباب الحقيقية وراء تحول الذهب إلى اللون الأسود على جسم الإنسان.

يغمق لون الذهب بسبب أكسدة الأربطة الموجودة في...

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…