I bought the necklace in the pictures from a small shop that mainly sold women's clothes, so from that and the price, I assumed it was costume jewelry. However, a friend thought they were real and introduced me to the "tooth test," and they are gritty. They're also heavy and cool to the touch but quick to warm up with skin contact. This made me wonder if they might be real? If they are real, are they worth very much (enough to make it worth having them evaluated?) Obviously, they're very baroque. The strand is 80" long with no clasp. Thanks for your help.