This is very popular handmade twist pen is made from Wenge, native to Central Asia. It has platinum plated trim, and is dark brown with dark brown to black streaks. Use a ballpoint Parker refill, which is easily replaced when needed and easily obtained locally or on-line.  A 0.46" diameter body, weights 37 grams, and measures 5 1/4" long.  Hand turned on a lathe, sanded, and give a protective varnish. One of my favorite pens that easily fits in anyones hand!