Semi-precious beads and pearls may be artificially enhanced. Many methods are used beyond just dye, such as heat treatment, special baths and irradiating.
It has become a common practice now because of the large demand of "Color" and we find it harder to get true color for a price that is reasonable. Because of that some of our beads will fall into that category and we can't guarantee the products to be colorfast or permanent in color. If you are concerned about a particular bead please e-mail before buying and we will do our best to tell you what we know about them.