Peach coral silk? Knit macrame sweater sz small

This listing is for a lightweight bohemian knit sweater in a pinkish peach or orangish coral color. I think it's silk, but I still get fooled by some silk blends, rayon, viscose, and very very rarely acrylic/nylon blends. It has a drawstring belt loop system knit in and a removable drawstring. Very pretty. Sz I'm guessing extra small or small and meant to be form fitting.