These earrings by Eden Presley are customizable in terms of the material used for the body (white or black onyx; both are shown below) and the stones used in the surround. You can also buy one only as a pendant (these come with a huggie to wear as earrings).
According to the site, “This fantastic piece is available as earrings with the diamond initial or character of your choosing. If you want to order as a pendant select that option from the style drop down. Please also select your gold color choice
Use the customize box to tell us what diamond letter you want. You can also write in heart, moon, or star.”
As earrings these sell for USD$3,400.