Sterling Silver Celtic Luck Knot Emerald Necklace. In ancient times, gifts adorned with a Celtic Knot design would be given with best wishes for luck with new endeavors. Pendant showcases an intricate Celtic knot design with a dangling deep green emerald teardrop. Hand-finished jewelry is crafted of fine .925 sterling silver. Beautiful Celtic Luck knot necklace makes a thoughtful gift. Pendant hangs from a box chain. Necklace secures with a spring ring clasp. One bezel-set pear-shaped emerald. Chain weighs 2.7 grams. Chain measures 18 inches long. Pendant measures 30 mm wide x 25.65 mm long.