Light blue gemstone pendant necklace with white pearl strand 17 inch

Light sky blue gemstone rounded rectangle pendant necklace on a slender white freshwater pearl strand.  The pearl strand is made up of 4-5mm button pearls which have been hand knotted by me between each pearl on super strong white nylon cord which looks like silk, but will last longer.  The clasp is a sterling silver lobster claw.  The length of the strand is just over 17 inches (43cm). I have wire wrapped an approximately 7/8 x 1 1/8 inch (22x28mm) sky blue gemstone pendant to accent the strand.