This rollerball necklace is made of solid silver and bronze. I ket them simple with a circle bail on top. Strung on 20 inches of sterling silver or 14k gold-filled chain. 1 1ml and 1 2ml glass bottle included with a steel roller.
All rollerball necklaces are made with solid sterling silver or bronze. Each rollerball lid casting is inspected for quality. The silver/bronze threaded lids are cast in solid silver/bronze by me in my home casting studio(not sheet silver caps over plastic lids).
You can store dried herbs/botanicals, tiny crystals, perfume, essential oils etc. Each vile includes a roller ball attachment(removable) for easy application.