Vintage Modernist Silver Swirl Brooch

Vintage, silver toned metal, mod pin featuring an abstract floral design with very nice detailing; hatching, oxidizing, green mottled glass or maybe agate stone cabochon. Striking and severe in style. Hand wrought feel. Interesting and unique. Not signed, not sterling. 2” x 1”. Sophisticated design at an approachable price. Vintage, industrial, brutalist, modernist pin.