This necklace was my most expensive one showing that day and it received many looks and favorable comments. But one woman looked quizzical and wanted to point out perhaps an error on my part. I'm not quite sure how to describe her demeanor. She said "What is that?" My answer, "It is agate." Her feathers became even more ruffled and exclaimed "It doesn't come naturally like that!" My reply, "That is correct. It is dyed and fired. I often use dyed gemstones, pearls, and shells in my work. I believe it often enhances the appearance." Dyeing adds color and firing enhances the color. Stones from the earth are also polished and drilled. They also don't dig them up already on a wire with a clasp. Frankly, I need a bit of dyeing and enhancing myself to look presentable!