Woods

Burr Elm	Cocobolo	Ebony	Kingwood
Mahogany	Oak	Pear	Plum
Purple Heart	Satine Rubane	Yew

All the woods change over time. Most become darker and take on a driftwood feel but on some people they lighten. It all depends on your lifestyle. The changes seems to settle down after a couple of years. The wood is fine when the rings are worn all the time because the natural oils in your skin will stop the wood from drying out and cracking. Because the wood isn’t attached to the metal the rings can be worn in water. If you feel the wood is drying out you can oil the wood occasionally especially if you do not wear it for a while. I use linseed oil but any oil will do.