Aqua Terra Jasper wrist mala. Aqua terra "jasper", which is also known as "impression stone", is the trade name for soft onyx marble. We hand make all our own wrist malas, so they can be custom ordered according to your design or our inspiration. The minimum quantity order is 2 wrist malas per bead type and 10 wrist malas total. Our standard bead size is 8mm, but other sizes are available upon request. You can also specify the type (and placement) of marker beads (if any), guru bead, leader bead, tassel beads, and string (or thread) color by entering in the information above.