Heart shaped stone necklace

AMAZING stone necklace that I purchased years ago off of eBay and sadly have never worn - because I didn’t like the way it looked on my fat neck ( consider the source - I’m hypercritical of myself!!!) It is absolutely gorgeous and I do love it. The striations in the stones are amazing. Keep in mind it has some weight to it because it is actual rock. It is 18” in length. Lobster claw clasp for security. I want to say it’s turquoise, but I’m not 100% sure. Hope someone will enjoy this gem!