Dog collar?

I was staying at a friend's house, trying to take some pictures of my jewelry in her garden, when she decided to put one of my necklaces around her dog's neck. The dog was an exemplary model and, funnily enough, the necklace looked rather good on her.

Here's the proof of it.

Quartz Crystal necklace and heart, with Amazonite cabochon.

Also a beautiful, green Tourmaline necklace with handmade bead (cast from a fossil).
Very comfortable to wear.