I think that this is a dichroic standard round brilliant gemstone. I see redder flashes as I turn the basically medium toned,yellowish orange gemstone around. It appears to be eye clean and has fine crystal. It weighs 4.07 carats.
I love this the color range of red orange in tourmaline. I think of Pad (a type of sapphire with an impossible name) and imperial topaz that only comes from Brazil. Still tourmaline of similar color, to those exceptional gemstones, does not get anywhere near their respect and price. And since tourmaline has to take the low ground, I like to think of a stone like the one posted as a tasty melon dripping with color. It makes my mouth water and I get as much of it as I can.