The studs are hypo-allergenic and nickel free. *this item may differ slightly in size, color, shape etc. as it is handmade. ⚠please treat with care⚠ polymerclay is sturdy to an extent and can last a long time if taken care of. this item is handmade out of polymerclay, without using molds. *items are made in the order they are received (unless stated they are needed by a certain date/for an event etc.) and will be shipped once they have been completed and the payment has cleared!