These are Hirotaka earrings. I really wanted to wear a pair of the single earrings, so I bought them at Tomorrowland at the same time. They are sold as singles, so the pearl sizes are slightly different if you look closely. Please be aware of this. There is no box. I think they can be worn for both casual and formal occasions. How about them as a Christmas present for yourself, or as a gift for your family...?