Each geode in the group is at least 1.75 inches in diameter across the largest diameter and will weigh between 0.20-0.25 pound each, total group weight is typically between 0.40-0.55 pound.
Guaranteed to be Hollow with Crystals - virtually all of these geodes contain clear, drusy, or slightly cloudy quartz crystal linings. Some contain bubbly chalcedony that can be drusy quartz-coated or not. See sample opened geodes for typical interiors (not included with your purchase).
Possibility for Additional Minerals - A few of the Sonora Crystal geodes have calcite on top of the quartz in the geode but the vast majority or all quartz inside.
Single group purchases will sent USPS First Class mail while multiple groups will be sent by USPS Priority mail.
Great idea for a school science project, birthday party, or just something to entertain your kids (or yourself!) with. We will provide opening instructions and an information card about the geodes you receive. Again, we guarantee these geodes to be hollow and to have crystals - there is no guess-work with our geodes - if you receive a solid geode, we will send a replacement at no cost to you and we pay the postage costs.