Each stud measures approximately 9mm. The glass is worked directly onto a (nickel free) sterling silver post. Each stud comes with a sterling silver butterfly back. 

My hands made these beads. I use Effetre glass, a little CIM and occasionally Vetrofond. All my beads are kiln annealed, thoroughly cleaned and inspected. There is no paint on any of my beads, just glass upon glass upon glass.

Please remember the jewelry looks larger than life in the pictures which is why it is important to check the size. I have tried to capture the colours as accurately as possible but many monitors vary.