I have a ring from the 1940’s or 50’s. It was my great great grandmothers.
I want to know what the marks inside mean.
On one side it says it’s a 10k ring.
On the other is has the letter S then 3 triangles then the letter F.
The setting of the ring is gold, and the gem in it is a peridot, Augusts birthstone, the gem is quite large too.