These 8mm rubber rounds come in a black and blue colorway with a fully opaque finish, sold in a pack of 5. Rubber beads bring a lightweight, slightly tactile quality that glass and acrylic can't replicate, and the UV-reactive properties here mean the color responds under blacklight.

The opaque finish delivers solid, fully saturated color with zero light transmission — what you see is a dense, flat depth of black and blue that holds its look in any lighting condition (and shifts under UV).

Specifications

• Size: 8mm
• Color: Rubber Black w/Blue (opaque)
• Finish: Opaque
• Material: Rubber
• Quantity: 5 Pieces

What to make with them

These work well in stretch bracelet stacks where the rubber flex complements the cord, and they're a natural fit for blacklight-responsive jewelry designed for events or costume wear. The 8mm size also makes them easy to incorporate into knotted or macramé designs alongside cord and other mixed materials.