A great way to embed an amethyst is to first clean it well by soaking it in a bowl of water for a few hours. This will remove any dirt, dust or surface contaminants. After washing it, fill a clear bowl with freshwater and drop the amethyst in. Swish the water around and use your fingers to rub the amethyst all over. Change the water several times until the amethyst is saturated. Finally, cover the crystal with ice cubes and place in a corner or cabinet where it cannot be disturbed. Let it sit for four hours, 30 minutes. At this point, the gem should be partially frozen and can be removed from its salt bath without damage.