These are tumbler size Rutilated Quartz from Brazil. Each piece measures between 1 inch to 2.5 inches. You will have the option to purchase 1 piece sample or by weight bulk for a much better deal. These are great specimens for all kinds of crystal crafting projects and crystal healing rituals. There are different shades of crystals in this mix from clear to smoky and sometimes even black specimens. Some also has needle-like inclusions inside with the color of gold, yellow or red.