These are really rose quartz stones. They come in a pale pink tone and each pieces colour can slightly vary in  natural colour. They have been polished and are smooth. 
Size 5cm
Rose quartz are a perfect addition to your hamsters enclosure not only for how pretty they are but also for their spiritual meaning. 
Spiritual meaning:Rose quartz is one of the most powerful crystals for manifesting love, whether you're looking to strengthen a relationship or bring someone new into your life. Its properties also extend to emotional healing and promoting spiritual growth. The rose quartz crystal meaning is one of unconditional love, encompassing romantic love, platonic love, and self-love.