Ingeborg Bratman moved from textile
design to jewellery and studied at Hornsey in 1965-8 before
titanium was in use there.
Her experiments with tantalum began in the mid 1970s when
she was encouraged to look for unusual metals by Sarah
Hosking who organised a series of themed travelling exhibitions,
one of which was “metals”. Ingeborg had heard
of tantalum through family connections and a chance encounter with a client secured
an introduction to Plessey in the UK who were industrial users of the metal.
The pieces were produced in the late 1970s with technical assistance from Plessey
and welding done by BOC in an argon gas chamber.
Tantalum has an attractive deep blue/grey colour and is
only coloured by anodising.