I received a brooch from my dad which was originally my grandmas from america, she had died and left it to me but I know nothing about it, where it came from what its made of, etc. it has 2 marks on the back one says 10K and the other is a symbol which I can't find anywhere, it looks nearly like this ' >o> ' its almost like an arrow through a circle but you can't see the center of the arrow. I can't get a clear enough picture of it. Please help with any info and please see my picture of the brooch

I have found some really good websites that offer some educational ansswers. Try this website: http://vintagecostumejewels.com/Info/Jewelry_Education_Links.htm I am having difficulty myself with a couple of pieces that I have had for years that were originally my grandmothers (I believe they were designed in the 1940s or 1950s).