materials used strip



When choosing studs and earrings, it’s a good idea to pay attention to top-quality materials that are best suited for your customers. By choosing top-quality materials for their new ear piercings, your customers will best support the healing process. Besides, they can avoid allergic reactions by staying away from sub-standard materials. We generally recommend to avoid earrings containing health hazards such as the heavy metals lead and cadmium or the metal cobalt.

Studex® studs and hoops are available in the following materials:

- 18 karat gold (750), as yellow gold or yellow gold rhodium-plated (white)
- 14 karat gold (585), as yellow gold or yellow gold rhodium-plated (white)
- titanium
- surgical stainless steel


All Studex studs and hoops are hypoallergenic and skin friendly. They meet or exceed European Union standards and FDA regulations (U.S. Food & Drug Administration).


What’s important to know with regard to nickel in jewelry?

Today, nickel can be found in all kinds of objects, such as jewelry, eyeglass frames, wrist watches, zippers, buttons, buckles or scissors. Any steel contains nickel and other materials. Nickel can be found even in lettuce and chocolate. Bargain jewelry can often contain rather large amounts of nickel. Since some people are allergic to nickel, the EU nickel directive regulates how much nickel may be released onto the skin per week. For earrings, these are a maximum of 0.2 micrograms per square centimeter per week (i.e. 0.2 millionth of a gram). All Studex studs and earrings fall well below this allowable value and are thus ideally suited for ear piercing.


What is "surgical stainless steel"?

The surgical steel used by Studex is a stainless steel with the 316L designation. Just like any other steel, this steel contains nickel. However, the nickel release rate for our studs and earrings is well below the allowable value given in the EU nickel directive, which makes them hypoallergenic and well suited as piercing studs and fashion earrings. This steel is also used for medical purposes, such as surgical implants, which remain in the human body for a lifetime without any harmful side effects.


What do the numbers 585 or 750 mean as they relate to 14 karat or 18 karat gold respectively?

Originally, the purity of gold used to be measured in karats. In the metric system, these values were then expressed in parts per thousand. The numbers 585 and 750, for example, refer to the amount of pure gold per 1,000 parts of the alloy, in weight (not in volume). In the case of 14 karat gold, 585 of the 1,000 grams of the alloy are pure gold, whereas with 18 karat gold, 750 of the 1,000 grams (i.e. three quarters) of the alloy are pure gold. The higher the purity of gold, the richer the gold color.


Yellow gold is a gold alloy which consists of fine gold (pure gold), silver and copper. The ratio of these materials determine the color.


Rhodium is a noble metal which belongs to the platinum group. Because of its rarity and high costs, it is usually used in small amounts, for example for plating jewelry. Rhodium plating gives gold jewelry a dazzling white appearance, much brighter than white gold, which makes diamonds, precious stones, Cubic Zirconia or crystals stand out even more.


All Studex earrings made from yellow gold or rhodium-plated yellow gold are also hypoallergenic.


How suitable is titanium for piercing earrings?

Titanium is a natural material which is very corrosion resistant, hard and comparatively light. Medical titanium is used for high-quality surgical implants. It is perfectly suited for earrings and piercings studs, as it is non-toxic and does not chemically react with the body, thus accelerating the healing process.

Titanium grade 23 (also known as 6AL4V-ELI) is used for Studex piercing studs. This alloy isn’t just extremely pure and resilient without being brittle, but also offers more shine compared to other alloys. This alloy grade is hypoallergenic and therefore well suited for prolonged periods inside the body.

Our Studex titanium studs are subjected to an additional, patented, special process, which produces a sealed surface consisting of 99.9% pure titanium. This will neither corrode nor tarnish. Additionally, this achieves the color tones of our titanium earrings ranging from a light gold to a champagne color.


How well suited are earrings made from plastic?

We advise our customers to avoid studs made from cheap plastic materials, especially when their place of origin is uncertain. Plastic can bend or splinter when it gets cold. Therefore plastic simply cannot be compared with brand name studs made from top-quality materials such as gold or titanium.


Customers who will have their ears pierced with our hypoallergenic, skin friendly piercing studs at your Studex partner store will also look for top-quality earrings made from gold, platinum, titanium or silver in the future.






STUDEX of Europe GmbH, Strassenhäuser 59, 6842 Koblach, Austria
Phone: +43-5523-56189-0,  Fax: +43-5523-56189-700Email:
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