Cobalt blue agate keychains, with dragon vein markings in the teardrop-shaped stone. Really nice shades of blue, with the crackle contrast more visible when the agates are backlit (see photo #2).  The main rock is wire wrapped in sterling silver, attaching a small black agate bead, then connecting to the handmade stainless steel chain. The agates are 4 cm (over 1 1/2 inches) long, the key rings are 2.4 cm (about 1 inch) in diameter, and the whole key chain will run about 11 cm (over 4 1/3 inches) when stretched out.   Each agate is unique - yours will have patterns similar to the photos.