Neither one is a "Tri-Color".
The Tri-Color Agate patch has a white base with surface striping in bright colors -- like red, blue, yellow, green, and sometimes oxblood. Having three colors isn't enough to make a Tri-Color -- there's a certain style.
In spite of the long seams on the earthtone marble, the colors make me think Master. If someone else thinks Akro, I wouldn't argue much. Still not a Tri-Color Agate. Here's a box of Tri-Colors.