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Frequently Asked Questions

How do I care for my jewellery?

If you want your jewellery to last long and sparkle like new every time you wear it, there are some quick and easy things you can do. Here's a short list for you:

  • Be careful with heat and bright light (from the sun) as it can cause discolouration or fracturing or affect any finishes your jewellery may have.
  • Avoid contact with any chemicals, like hairspray, lotion, perfume or other cosmetics and also cleaners and the swimming pool. So apply lotion, cosmetics, hairspray and perfume before wearing your jewelry.
  • Do not use ultrasonic cleaners on jewellery with set gems, stones or pearls. They can chip or loosen.
  • Remove jewellery when doing any work or swimming.
  • Only use soft cloths or brushes (preferably those especially designed for jewellery) to wipe and clean your jewellery. Avoid using paper, polyester, and coarse fabrics because the may contain wood fibers or synthetics that can scratch the surface of your jewellery.
  • Only use lukewarm water with mild detergents to clean and rinse under running water.
  • Always store your jewellery safely in a jewellery box with appropriate protection for each piece.

 If you'd like to read more information about cleaning, we recommend visiting the website of the Gemological Institute of America GIA here.

Which materials are used in our jewellery?

What are the different base materials used in the jewellery?

925 Sterling Silver is a combination of 92.5% pure silver and 7.5% of another metal, and it is the highest percentage of fine silver possible for jewellery subject to everyday wear. Fine silver (99.9% pure) is generally too soft and malleable for jewellery. Therefore, it is usually combined with copper to give it strength, while at the same time preserving both the ductility and beauty of its original form.

Brass is an alloy of copper and zinc. The proportions of zinc and copper can be varied to create a range of brasses with varying properties. For jewellery, the most commonly used percentages of copper and zinc is 67% and 33%. This mixture helps the brass become stronger and more durable than copper alone, which allows for superb electroplating quality, and thus, it is the perfect combination for fashion jewellery.

Iron is by mass the most common element on Earth, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. Pure iron is relatively soft, but is unobtainable by smelting. The material is significantly hardened and strengthened by impurities, in particular carbon, from the smelting process. A certain proportion of carbon (between 0.002% and 2.1%) produces steel, which may be up to 1000 times harder than pure iron.

TK316 Stainless Steel used in fashion jewellery, is an alloy with a minimum of 10% chromium content by mass. It does not stain, corrode or rust as easily as ordinary steel, and it is also hypoallergenic. Thus, it is extensively used in heavy gauge-welded components, such as jewellery. Tusk 316 stainless steel is of the highest quality for jewellery products.

White Metal is any alloy that is light-colored, and is used especially as a base for plated silverware, ornaments and jewellery. Some of the metals used to create this alloy are antimony, tin, lead, cadmium, bismuth and zinc. Not all of these metals are found in all white metal alloys, but are combined to achieve a desired need, such as being able to be casted and polished.

Does your jewellery contain allergenic materials?

Allergenic materials in jewellery are considered to be nickel, lead or cadmium. At NoeBijou we always try to offer only jewellery which is free of these materials. We only use suppliers and manufacturers from which we can obtain information or certificates about the absence of these potentially allergenic materials in the jewellery. However, traces of these materials can always be present due to the manufacturing process or environment and whence a possible allergic reaction cannot be 100% excluded. If you believe to have an allergic reaction to one of our products, please contact us immediately.

What are the different metal or color finishes?

Gold A thin coating of galvanic plated or IP gold is deposited on the item. It is mixed with other metals, usually silver or copper, to make it less expensive, harder, and longer lasting. 10k gold is approximately 43.5% pure gold and 24k gold is pure gold.

Flash Gold is similar to gold coating; the difference being flash gold has a thinner layer of gold than the average gold plating.

Rose Gold gets its rosy tint by mixing copper with gold. The ratio of gold to copper is usually 3:1, but varying percentages can be used as well, the intensity of the color differing according to the ratio of gold and copper.

Flash Rose Gold is similar to rose gold coating; the difference being flash rose gold has a thinner layer of rose gold than the average rose gold plating.

Brown A brown coating gives a piece of jewellery the color of chocolate or coffee brown.

Silver is often coated on a base metal, such as copper, brass, white metal and nickel, to give it a smooth and shiny look. It is considered a great alternative to pure silver jewellery due to its cost efficient attribute and strength.

Rhodium is a noble metal with a whitish gray appearance, and it is typically applied to metal through electroplating. A thin plating of rhodium is applied over either sterling silver or alloys to give a piece of jewellery a bright, polished and long-lasting finish.

Black A black coating uses either ruthenium or cobalt alloys to give a piece of jewellery a light black or completely black color.

 

Which plating types are used in our jewellery?

No-Plating is when the metal of the jewellery piece has no additional outer coating, and the metal is usually polished to make it shine.

Galvanic Plating is a process that uses electric currents applied to two opposite poles (negative & positive) in a tank of solution which contains the dissolved material of the coating. The product is attached to the negative pole and powered with a negative charge, while the metal dissolved in the solution is powered with a positive charge. The product then attracts the positive-charged metal in the solution, and thus, creating a thin coating of the desired material.

Vacuum/Ion Plating the product is placed in a vacuum chamber, which is pumped down to the desired vacuum pressure. The chamber is then heated to the target temperature to evaporate the material, which is sprayed onto the product, producing a thin layer of coating. It is also called PVD for Physical Vapour Deposition. It is the most durable form of plating.

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