Genderwomens gemstoneopal length of earringsinch078approx2cm width of earringsinch078approx2cm jewelry typehoop earrings drop earrings stud earrings occasionhousewarming office career birthday outdoor anniversary special occasion sports gift casual engagement daily valentine party business wedding bikini thank you beach graduation christmas gifts congratulations halloween materialopal alloy shapeflower jewelry stylepersonalized elegant basic diy adorable classic