Bold Blue Chalcedony Sterling Silver OOAK Necklace Gem Bliss. Bold and beautiful sky blue faceted Chalcedony nuggets have been gathered in this unique and dramatic hand forged Sterling Silver Necklace. Sturdy square wire has been fashioned into 7 oval free-form circle links to connect a sampling of sky blues; everything from a stormy gray to a sunny bright blue day. These Chalcedony pieces are approximately 1 inch, there are 11 of them. Clasp is graceful Sterling Silver hook and latch, easy on and off, 23 inches long.