Soft, low grade, turquoise that has undergone a stabilization process to enhance its hardness and color. During this process, the stone is put under pressure, causing it to absorb a clear epoxy or plastic filler. This results in a harder stone that is suitable for use in jewelry. The stabilization process was first invented in the 1950s in Arizona.

Turquoise by nature is a relatively soft, porous stone, and it can vary greatly in its quality.   Only higher grade natural turquoise is actually dense enough that it can be cut and shaped without damaging the stone.  Softer, lower grade turquoise has to be treated in some way in order for it to be usable in jewelry. The resulting piece of turquoise is then much stronger and easier to cut, polish, and set by a jeweler without risk of breaking. Stabilized turquoise can be produced in large quantities and is less expensive than natural turquoise.