For your consideration is one set of Crown Trifari clip earrings with a matching brooch pin. 2" X 2 1/4" and 3/8 from front to back measuring the widest areas. The clip earrings are approx. One stone on one of the earrings appear to have been replaced (pic).
Not to easy to detect, just sparkles more than the rest. From research the rhinestones are called black diamonds although they appear sort of gray to me. This design I believe was an Alfred Philippe design and is fairly rare. Please view the pics as part of the description and message any specific questions. Thanks and have a great day!