How old is this piece??

[Mgerha7334]

Does anyone have any idea as to the era that this ring could have come from? Unmarked, but tested to be platinum, All European cut diamonds, Diamond clary VS1 to VS2. I was wondering if it comes from the 1910's but not sure. And if it is in such pristine condition, could it be a reproduction. But googling around for "antique style" new pieces, I never see anything like this ring. So I do think it is old. I don't know if later I might want to sell it, not sure.

 

[stracci2000]

You are correct, 1910's-1930's.
It is a very common style of the day. Search "Art Deco shield ring" and you will see many examples.