Prometheus Jeweller's Sterling White - Bronze Clay

(1 Review)
£6.50 (Inc Tax)
£5.42 (Exc Tax)
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Prometheus® Jeweller's Sterling White Bronze Clay is a claylike material which turns into pure, solid bronze when fired in a kiln. It is a mixture of micron sized bronze powder, water and organic binder. It can be formed by hand, rolled into a sheet or a rope. It can be moulded, textured, even turned on a potter's wheel. Prometheus® Bronze Clay can be fired with most lab-created gemstones (cubic zirconias), pre-tested natural stones, glass beads, ceramic and porcelain. 

When the clay is fired in a kiln, the organic binder evaporates and burns away and you’re left with pure, solid bronze. Brush it, if needed pickle it to remove any fire-scale and finally polish. 

You can create unique jewellery, ornaments, hollow ware, statutes, sculptures and many other decorative objects. Any thing you create with Prometheus® Bronze Clay is a piece of art. Combine it with your imagination and let your fingers do the rest!

This clay shrinks between 15%-16% based on firing methods.


Prometheus® Jeweller's Sterling White Bronze Clay has a 2-stage firing:

  1. Place your dried piece(s) onto stainless steel mesh, and into a cold kiln
  2. Wait for the kiln to heat up to 500°C/932°F and fire for 15 minutes
  3. Once finished, remove the piece and leave to cool on a heatproof surface
  4. Preheat your kiln to 770º/1420°F
  5. Pour 3cm of activated carbon into a steel container, and place pieces at least 1.5cm apart
  6. Thoroughly cover with activated carbon, and place steel container inside the kiln
  7. Wait for the kiln to heat back up to temperature, and fire for 2 hours
  8. Once finished, remove the piece and leave to cool on a heatproof surface

Prometheus® Jeweller's Sterling White Bronze Clay can be combined with Prometheus Bronze Clay, Prometheus Copper Clay, and Prometheus Sunny Bronze and fired with the same firing schedule.  

Annealing: If your pieces are thin and long, then it is recommended that you anneal your pieces in order to maintain high strength and malleability. 

Available in 20g, 50g, 100g.

* Also available in 10g syringe here. *

Reviews (1)

Prometheus sterling white bronze clay

Written by Samantha on 24th Aug 2018

I love this clay, it's very easy to use, takes textures very well and is one of the few white bronze clays that actually could pass for silver or pewter.

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