Light Blue Chalcedony Beaded Necklace, Genuine Large Chunky Gemstone

Light Blue Chalcedony Beaded Necklace, Genuine Large Chunky Gemstone Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. In common practice, only the translucent, single-color types of this material are sold under the name “chalcedony.” Blue chalcedony is a highly prized gemstone. The blue variety of chalcedony occurs only when it does not contain many color-changing impurities. This stone is perfect for carving, cutting, crafting, and tumbling. The most valuable natural specimens of blue chalcedony bend the light in such a way that they appear to be lit from within. 27 mm - 19 mm round flat blue chalcedony beads 6 mm silver-color plastic beads The total length is about 19" with a lobster claw clasp and extension chain, the inner circumference is about 16". Feel free to contact me to personalize the length.