In person they have a wonderful weight and thickness. Not at all like cheap costume jewelry, you can really tell they are well made. One is a star, and one is a crescent moon. They are *not* the nap earrings, these have traditional post backs. I got them from the Maison Miru Sample Sale in July 2022 -- they've been worn probably around 5 times since then. Because of that, I can't find an exact link to the item online, but it's similar to https://www.maisonmiru.com/collections/ear-bar/products/classic-star-nap-earrings and https://www.maisonmiru.com/collections/ear-bar/products/classic-moon-nap-earrings. You can tell the star in particular is the exact same shape. My best guess is that they are 18k gold plated over titanium, but if the metal content is very important to you for safety/new piercing reasons, it's probably better to find another source since I can't guarantee it.