Amethyst is a violet variety of quartz that is used in jewelry, so it is very colorful and bright, whereas a dull iris would not be like an amethyst jewel
Consider the statement "He pinched his eye and a contact lens came out, revealing a dull iris.". Based on this "He made a pinching motion and a colored contact lens popped out, revealing an iris that was like an amethyst jewel ." a true statement? Yes, no, or I don't know?