These are around 1/2” inch thick and wrapped in imitation gold, they hang on a 16-18 inch imitation gold chain with extender. They come in a few different colors. The colors are beautiful. The purple is great to represent the higher self, third eye, etc.. The blue represents the water element, relaxation & communication. The pink represents love and the heart chakra. Each one is dyed glass/resin man made to resemble that of an agate slate.