Purpleheart, a spiritual wood and one of the most durable woods for rings.  The ring above is a simple purple heartwood ring 5mm wide.

The purpleheart wood rings to the left have narrow spiraled bands of birch wood.  The rings are 4 and 6mm wide respectively.
Purpleheart wood rings
Gallery D
Touch wood rings
TOUCH WOOD RINGS - Wear the warmth of wood.
Wood Rings. Individually custom designed, meticulously hand crafted wooden rings by British Columbia artist and craftsman David Finch.  Touch Wood Rings.  From Canada.
Malia's purpleheart wood ring
purpleheart wood rings with spiraled bands of birch wood