Each silver Portishead ‘P’ is individually handcrafted in the UK (Bradley Jewellery) using Precious Metal Clay, hung on a brown, waxed cotton cord.
The pieces are all crafted using the same method for sizing, impression, firing, polishing and finishing but each piece acts differently during these processes and therefore each ‘P’ is unique and no two pieces are identical.
Precious Metal clay is a blend of three natural ingredients: pure silver powder, water and a non-toxic organic binder derived from wood pulp.
As well as being a very natural product, the silver powder is recycled silver from the film and photographic industry.
The ingredients are formed to a make an extraordinary metalworking clay. In the heat of the firing process where shrinkage occurs, the individual particles of silver melt or fuse together: this is called ‘sintering’. What is left is 99.9% pure silver and is stamped 999.
Powdered metallurgy is an ancient art; the ancient Incas made jewellery and other artefacts from precious metal powders, while iron powder existed in Egypt as early as 3000BC and the smiths of India produced the famous Iron pillar of Delhi as early as 300 AD.
It was in the 1990’s that this form of Precious Metal Clay was discovered by metallurgists in Sanda, Japan.