What is that BLACK Stuff??

That's Stingray Skin... I have some dyed black Stingray Skin, so I cut it into the shape I wanted & mounted it on a piece of copper... then I made the setting...

This is "Kristine"...

"Kristine" - Sterling & Fine Silver, with Stingray Skin mounted on Copper.

A bit of a confession... I didn't plan on it, but she ended up reminding me of a crab, that's how she ended up with the name Kristine...