Blue Chalcedony

One kind of semi-precious stone that comes in a range of stunning blue tones is blue chalcedony. For millennia, this stone has been employed in many different ways. Ancient ceremonies and rituals made use of blue chalcedony. A rare, translucent blue variant of quartz, blue chalcedony belongs to the silicate mineral family.It is a microcrystalline quartz, which means that without magnification, its crystals are too small to observe.