This is a vintage set of unsigned Crown Trifari horse head profile brooches of mare and colt
The eyes are a blue topaz marquise 
There is some wear on the larger horses' nose and mouth.  I could not see this with my naked eye until I posted the pics.  The pictures make the rubbed area appear larger than it actually is.
Brushed silver/pewter metal
Large horse 1 1/2 x 1 1/2 inches
Small horse 1 x 1 inch