Great for tumbling! Wonderful mix of 17 quality gemstones from Brazil. This lot is a mix of Amethyst, Green Aragonite, White Aragonite, Blue Onyx, Green Onyx, Red Onyx, Citrine, Blue Quartz, Green Quartz, Rose Quartz, Clear Quartz, White Quartz, Fuchsite, Orange Calcite, Blue Calcite, Orchid Calcite and Red Jasper.