Each strand is full of gems. No hooks or closures are used. They are approximately 34" long and contain most, if not all, of the following gems: adventurine, quartz crystal, lapis, citrine, turquoise, rose quartz, peridot, amethyst, black onyx, coral, mother of pearl, tigereye, garnet, agate, moonstone, malachite, blue topaz, carnelian, and hematite. Most gems are imported.