What are centipedes in the context of moonstone?

In the context of moonstone, centipedes refer to tiny tension cracks that can occur within the stone. These features are significant because they can impact the overall quality and value of moonstone. When present, these cracks can diminish the stone's clarity and structural integrity, making it less desirable in the eyes of collectors and gem enthusiasts. Understanding this aspect is crucial for evaluating moonstone, as lower clarity typically leads to a decrease in market value and aesthetic appeal. Thus, recognizing the presence of these tension cracks is an essential skill for anyone involved in the trade of gemstones.