Trifari- one the preeminent costume jewelry makers of the United States. There is a lot of information about the company in books or on the net. After 1930 when Alfred Philippe join the company as a designer, they produce many jewelries. So if you want to start to collect, you have chances to find many beautiful pieces on the market. Older pieces definitely more rare. I specifically like the necklaces they made in the 60-70’s because they are still wearable today. Take a look of some I have.