Mesmerizing Eye Agate Necklace - Natural Designer GemstoneEye Agate a captivating gemstone is named for its mesmerizing patterns that resemble eyes. These "eyes" are formed by alternating layers of differently colored minerals, such as chalcedony, quartz, and jasper. The specific mineral composition and arrangement create the beautiful concentric rings, often with a distinct "pupil" and "iris" formation. Eye agate refers to any agate that exhibits the concentric circles or elliptical patterns, regardless of