Seeking Info on Peter Broome

When I acquired this ring a number of years ago there was very little about this jewelry designer online. Another ring...in silver. But no information about the artist, Peter Broome. The other day we looked again and there were many examples of his work to look at... but still no info on the man, except that he worked in San Francisco, California and is a noted modernist. All the examples we found were silver. Ours is gold. Any thoughts on our ring or any information about the artist would be greatly appreciated.