This jellyfish necklace is made with inlaid blue fiery created opal and cubic zirconia accents set in sterling silver. Created opal is made of the same elements as natural opal but made in a laboratory. Created opal has more consistent fire and is more durable than natural opal. This jellyfish pendant is 1 1/4 inches high and 1/2 inch wide on comes on a 16 inch long cable chain. Jellyfish necklace comes inside a jewelry gift box.