mini gem stud earrings from MONICA VINADER featuring gold-tone, green, 18kt gold plated, recycled silver, onyx, post-back fastening and for pierced ears. These earrings come as a pair.. Every handcrafted Monica Vinader piece comes with a five-year warranty.. Conscious: This item is made from at least 50% recycled or upcycled materials. For recycled synthetic clothing products we highly recommend using a microfibre-catching washing bag to ensure that no microplastics that can pollute water are released in the process..