Blue-Green Chalcedony Clover Necklace. This elegant Necklace is handcrafted to perfection. Hanging a stunning Blue-Green Chalcedony clover from a 16" beaded chain. The aqua chalcedony meaning is of improvement of self-perception and increase of optimism. Its healing properties are not strictly mind-related, as it builds the immune system and repairs the mucous membrane. Its association with the throat chakra allows the blue Chalcedony to heal the throat, ears, and sinuses.