Polymer clay is a pretty resilient material in which it will bend before snapping completely. It also will not shatter if dropped by accident. However, the pearls and beads are prone to cracking and/or breaking so please be mindful.
Although some components are gold-plated, the plating will wear off eventually. To avoid tarnishing of your pieces please avoid lotion, perfume, and water. Exposure to skin oils may also cause tarnishing, but have no fear. Simply wipe your earrings with a soft cloth after every use. Dirt and makeup can be removed by using a little bit of rubbing alcohol. If tarnishing does happen, put some tarnish remover on a soft cloth and gently wipe your pieces.