Lightweight bead neckace

I got this necklace at a free swap, and LOVE it because it’s lightweight. I’m not sure what material the beads are made of, but they are smooth rounded heart shapes in the colors of silver, charcoal and black, with a gold cord and small gold round metal beads between each heart shape. Metal clasp closure. I like it because it has a classic yet modern look about it, doesn’t overwhelm my petite figure, and yet makes a statement. And the colors are neutral enough to go with many things I already have.