Subtle and elegant Serotonin gold drop Earrings by Urbiana. "Serotonin" is an everyday earring that is created as a reminder of how beautiful you are when you smile and feel happy! Serotonin is the key hormone that stabilizes our mood, feelings of well-being and happiness! =) A great pair of Serotonin drop Earrings would make such a lovely gift for science lovers! Our beautiful handmade Serotonin gold drop earrings are perfect for any occasion. Simple or extravagant, they are the perfect finish to any outfit. Handmade item. Packed and dispatched with love in a ready to gift organza bag from our Brick Lane studio in East London. An ideal gift for yourself or for someone you love on various occasions like a wedding, casuals, birthdays, valentine's, Christmas, anniversary etc. MATERIAL: Brass. Hypoallergenic, nickel-free, lead-free, cadmium-free, perfect for sensitive skin. MEASUREMENT: One size available. CARING FOR YOUR URBIANA BRASS JEWELLERY: Brass naturally tarnishes over time into an antiqued look giving it a beautiful patina. However if you want to get back the shine of your piece, it is easy to clean and look after. You may use home solutions like lemon juice or toothpaste or a commercial brass metal polish like Brasso.