Rhodochrosite_South_Africa_Blood_Red_Diamond_Crystal_Cluster Published July 17, 2018 at 1600 × 1600 in Field Trip: Midwestern Geode Localities ← Previous Geodes sometimes have carbonate minerals inside, like Calcite. But, wouldn’t it be cooler if they had crazy red Rhodochrosite crystals like this. Click here to see more amazing photos of crystals