This Matilde Poulat/Ricardo Salas "crown" brooch has been repurposed into  a pendant with an amethyst necklace.
The brooch is pure Matl/Salas, with 6 amethyst faceted teardrops and 3 amethyst pyramids. There are 25 turquoise cabs to complete the piece. In person, the piece is mesmerizing...I can't stop looking at it! 
All stones present and it's in excellent condition. This is a Matl/Salas piece, so it's circa: 1980 on.
The amethyst necklace features 3mm facetd rondelles which match the color of the gems on the brooch. The strands end in a sterling lobster claw with 2" of sterling chain, so the necklace is adjustable from 16" to 18" in length. Both lengths are shown in the photos provided.