A ballpoint pen made with purple heart wood
Leaving the wood on the pen unsealed allows the pen to age and darkens as it absorbs your body oils when you use it. Over time, it will darken and the grain becomes more pronounced. It makes this pen truly unique and personal only to you.
Wikipedia say: Peltogyne, commonly known as purpleheart, amendoim, violet wood, amaranth and other local names is a genus of 23 species of flowering plants in the family Fabaceae; native to tropical rainforests of Central and South America; from Guerrero, Mexico, through Central America, and as far as south-eastern Brazil.
It comes with a tied velvet pouch.