Our stud earrings are made from implant grade G23 titanium (ASTM F136 standard). Titanium is an excellent material with features such as lightweight, corrosion-resistant, non-tarnishing, and free of nickel and lead elements. Most importantly, titanium has excellent biocompatibility, which means titanium earrings will not cause allergies or adverse reactions in the body. Titanium earrings are safe for the skin, making them ideal for people with sensitive skin. You'll receive a pair of titanium studs with post gauge 20G (0.8mm) and post Length 6mm. They can be used for cartilage, earlobes, helix, tragus, and other areas. Whether you're wearing them for special occasions or adding a touch of sophistication to your everyday look, these earrings complement any outfit. The smooth surface of these titanium earrings allows you to wear them comfortably during sleep and swimming. The earrings secure in place by screwing in, ensuring they are firm and not easy to fall off. Every back of the studs is inlaid with a gem(AAAAA), making the overall appearance beautiful. There are many styles of these small and dainty earrings,you can wear them individually or mix and match with other ear studs to create your unique style. These unique earrings are beautifully packaged and can be given as a present to yourself, family or friends. A sentimental surprise for any elegant lady. Nice present for mom or grandmother on Mother's Day, anniversary, birthday or wedding celebration. If you have any questions, please contact us.It is very important that you have a great experience and enjoy our jewelry. Titanium is known as a "biophilic metal" and is widely used in medical devices and human implants. It can be exposed to iodine volts and does not turn black like silver.  Even if it is immersed in seawater for a long time, it will not affect its nature and avoid human allergy to the greatest extent. Completely free of lead, nickel and cadmium.