Product Details

Product Information

Use these 3mm pre-cut black opal donuts to create striking jewellery pieces or add bold circular detail to your fused glass designs.

Each pack contains 4 waterjet cut glass donuts. Available in two sizes -

  • 20mm (10mm internal, ideal for bracelets or earrings)
  • 40mm (20mm internal, ideal for pendants).

For best results, tack fuse when using as embellishments to help retain their shape. When double layered to 6mm for jewellery, they can be full fused.

Due to the manufacturing process, small points may occasionally appear around the edges - these will usually fire out or can be easily removed with a quick grind, diamond hand pad or sickle stone.

An opaque, glossy black, perfect for bold, contemporary designs and statement jewellery pieces.

Working Note

Cold characteristics: 

Consistent colour. Although termed an opal due to its almost total lack of light transmission, this is (in terms of its composition) actually a transparent glass.

Working notes: 

Low viscosity. Will flow sooner and more than other glasses. In very thin sections the colour may vary from reddish/grey to bluish/grey.

 

All our glass is COE90, Bullseye Glass compatible and suitable for applications such as glass fusing, glass casting and glass slumping (unless otherwise stated in the description).

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