INCLUDES 1 WOOD BLANK (several blanks are shown to indicate the range of color/grain to expect). Amboyna Burl, Pterocarpus indicus, is the World's rarest and most expensive burl, possessing incredible colors and patterns. It was used for the first Rolls Royce's dashboards. It is moderately easy to work and takes a very smooth, high polish that makes pens absolutely outstanding! Skill Level: Intermediate.