1960s Sigi Pineda Sterling Silver 925 Tasco Mexico Brooch Pin Green Glass Stone

Vintage Mid Century Sterling Silver Brooch pin. Beautiful green swirled glass stone centerpiece. Signed Sigi Tasco Mexico. I polished with a jewelry cloth prior to listing, yet there is still some light tarnish in the hard to reach areas that I will leave up to the new owner to clean up as they wish. Gentle preloved condition. The Brooch measures 2¼" long and the stone measures about ½" in diameter. Questions and offers are welcomed:)