I got these silky feeling silver toned clasped black cords some time ago to wear with some of my precious metal and gemstone enhancers.  Since enhancer type pendants have a bail which is designed to be opened and closed to secure it to the necklace, the size of the end pieces and were not a problem. However, the diameter of the cord measures a good 3.5 mm when new, and flattens out with use to over 4.0 mm.  Therefore, the cords overwhelm pendants less than an inch in size and look appropriate only with larger, chunkier pieces of jewelry.