Are the amethyst stones only in the triangle shaped or v-shape windows or along the mat?

The crystals are infused into heat resistant artificial suede tubes, or are fixed with mesh fabric, throughout the mats. On MediCrystal V-mats only some of the crystals are visible, through two V-shape transparent lines. 

On the mats with a triangular window, only some of the amethyst crystals are visible through the clear PU heat resistant window as well.

Our film is especially heat resistant and will not deteriorate or become yellowish over time.