Strong. According to JD.COM's inquiry. Com, the enamel is very strong, and the butterfly chain with ancient enamel color is made at high temperature, and the texture is extremely hard. Butterfly bracelet is a brand of Van Cleef & Arpels. The design continues the original design of Van Cleef & Arpels, and adopts the butterfly pattern symbolizing happiness and sweetness, plus its exquisite structure, in order to bring a sweet happiness to the wearer.