The S. W. stands for stinking water plume agate which is the location of where this agate was mined it this heart is translucent with beautiful plumes to gaze at for generations. Fabricated with sterling silver wire there is a small heart. Of 14 karat gold in the back or you can wear either this is a you can wear this pendant on either side the scroll work on the back is lovely and the prongs in the front so the stone off nicely. This agate is one of my favorite types a agate! I truly enjoy gazing into this heart and holding it up to a light source. Shown on a plain piece of ribbon here, I do provide a simple leather or (leather substitute if you prefer) necklace with a plain hook and jump ring clasp. At lengths 16, 18,20 or 22of your choice. Measures 1.25inches across by 1.25 inches vertically the bail measures 1/4 an inch (.25)