Dinah- To the best of my knowledge white gold wasn’t used very much
until the 20th century. It may have been around but I haven’t seen
it used before the turn of the century.
Much of the older work I have seen and worked on was yellow gold with
silver plates for stones to be set in a white material.
If I had my way we’d still not be using white gold. Tim and I call it
"poor man’s platinum".
Have fun and make lots of jewelry.