My favorite gemstone is tourmaline.
The ones pictured here are from www.gemstone.org
I have a collection of tourmaline at home. I prefer the indicolite tourmaline, the hot pink tourmaline and the apple green colored tourmaline.
Ohhh! I love tourmaline.
You know what I'd really like to buy? A rough watermelon tourmaline geode! That would rock! (pun intended)
I'd also like an emerald cut watermelon tourmaline set in a ring... but those are expensive!