No, according to the query of Jewelry Paradise. Com, Turkey chalcedony has good hardness and toughness, and will not crack if it is not worn for a long time. Blue chalcedony belongs to agate series, its hardness is Mohs 8 degrees, and it is blue because of its copper content, and the color depth is different with different copper content. Blue chalcedony and blue agate are light blue or even slightly white, which makes people feel very soft.