Arkansas quartz is some of the cleanest quartz in the world rewarded the grade of “AAA” gem quality. Quartz is a Mohs 7 hardness out of 10 that makes this a durable stone for jewelry. These are beautiful 6mm hexagon faceted stones set in a sterling finger basket setting. This allows the brilliance of the stone to shine through and make these very durable. Great for everyday wear and a brilliant addition of sparkle and flash for those special evening occasions.