Turquoise, Coral and Sterling Unique Pendant

Now this is a piece of jewelry! Beautiful, big chunk of turquoise, surrounded by rows of coral stones. (The turquoise really is gorgeous) This has a protruding design on its back.,with a coral stone in the center. And no, it does not open. I’ve tried everything. It doesn’t open but that doesn’t stop everyone from trying! This appears to have been a part of something. There is that ring at the bottom that once had something attached. That ring can be removed easily. Set it silver, the maker didn’t skimp. It weighs a solid 50 grams. I suspect this pendant to be Mexican made. Well made , beautiful, beautiful turquoise stone, and something different, for sure. So cool! This is an older piece, maybe from the 70’s.