Crystals are what most people purchase, they have the jewelry brilliance and sparkle since they have flat edges that reflect the light. The Crystals that have Metallic in their name have a mirror finish on one side of the glass that makes them sparkle even more. The pebbles are smooth rounded pebbles that don't have flat edges so they don't sparkle like the crystals, but they come in some brighter colors like Red, Orange and Yellow. The recycled glass is crushed recycled glass made from many different types of glass, they have nice colors, but don't sparkle like the crystals, but are not smooth like the pebbles either. The choice is yours, if you need help choosing type of glass or colors, give us a call, we are always glad to help you with colors that will match your decor.