What a fabulous brooch! Constructed in silver with a turquoise center stone in a stylized sawtooth bezel, over a piece of red branch coral in a modernist setting. The brooch is signed with a zigzag mark and has the number 65 for the year 1965. This unique brooch measures 2.125" x 2". Substantial piece weighs 44.2 grams. I have not been able to find anything about this artist, but I have several pieces with the same mark, so if you can identify the signature, and care to share, please let me know.