The precious gold and silver used in Thollot Permanent Jewelry is made from the highest quality precious metals and alloys. While some chain styles are more durable than others and made to endure longer, even our fine chains are chosen to hold up for the longest time their daintiness allows. As with all precious gold and silver jewelry, durability is associated with lifestyle. Certain activities, such as swimming in chlorinated pools or soaking in a jacuzzi every day, are rough on your accessories. Not to worry! During seasons of activities like these, we will clasp you so you can remove it. When you are ready to remove the clasp, we will be here to relink you!