New vintage large acrylic earrings

New vintage large acrylic earrings Lightweight rectangular earrings made of acrylic, resin, or lucite. Feels warm not cold (not ceramic, not metallic, not stone). Smooth texture with 4 stepped curves. Looks like a real polished opaque milky stone. Even looks like it has inclusions and striating. Cream, yellow-brown-rust veins. New vintage c. 1980s. On original packaging. Probably Artistic Jewellery Canada. 23x30x3 mm Natural looking, neutral, geometric repeating shapes in stepped design.