This handmade pen is made from Purpleheart, native to Central and South America, with a screw-on cap.  It uses a Schmidt 888 fine rollerball refill in black, which is easy to replace when needed, and readily obtained on Amazon, and sometimes at local stationary stores.  It's hand turned on a lathe, sanded, and given a protective varnish. This is dark-brown wood with a hint of purple.  The weight of the pen is comfortable at 37 grams, with a larger diameter that fits your hand well.  A darker wood with subtle graining.