What a happy guy - or gal!
Articulated bear is on a 24 inch silvertone chain. The body is 3 1/2 inches in length and 2 3/4 inches in width. The head has sparkly green rhinestones and is 2 1/4 inches in diameter. The riveted pins on the back allow movement, so he is "articulated."
I think he or she is just plain cute! I remember this type of necklace from either the 1970s or 1980s.
Very good vintage condition!