Ring - Size 6 with Prong Cup - 4.9mmID - Sterling Silver (2)

Cute ring - size 6 - which is small. For me anyway. Might be perfect for you. Setting with prongs for a 4.9-5mm stone, 4mm deep. So a size ss21-22 rhinestone would work. Flat band is 2.9mm wide.

By the pack of 2.