Celebrating my first promotion

hiiii BWT, i just got my first big promotion at work and want to buy myself a piece of jewelry as a memento, something where i can wear for a really long time and look back and remember that i bought it to celebrate this moment. my budget isn’t huge (i’m only 23) so i’m thinking around $200-$300. i haven’t found anything i love but i do mix metals so i can do gold or silver. does anybody have suggestions?