HOPS Brooch Set - looks like a KRAMER ?

here is a brooch and earring set that look like the Hops leaf, the set is done in 3-tone tiers of colors , (white, champagne and blue).
there are no marks on this set except for the indentation shown on the 3rd picture, can't read it.
the reference to KRAMER comes from the piece i the 4th picture. Similar to mine but I don't know.
I have been hesitant to clean it too much.