I love this stone. Every time I check out this tray, the stone jumps out at me. It has a very clean body except for a few growth tubes. Growths tubes form inside a crystal of tourmaline when something interrupts the growth of the crystal in a small area of the principle axis. The resulting tube that is formed is always parallel to the c axis and has flat sides like a crystal. Depending on their diameter and density, they can make a tourmaline suitable for having an eye stone cut from it or just be a little nuisance like in this gemstone. This hot pink and it is hot, weighs 3.63 carats. I should also say that its great medium tone level helps turn up the heat.