Crystal Set for Stomach Healing with Natural Amethyst, Carnelian, Citrine, Gut Healing Set, and Detox Crystals. If you are someone who suffers from stomach pain often, our natural amethyst, carnelian, and citrine set can help! These crystals have been known to help with stomach issues, the intestines, and digestion. If you are looking for relief, give this set a try. This special, all-natural stomach relief kit can help with: Food poisoning. Gut health. Nausea. Acid reflux. IBS. Anxiety. Mental clarity. This set consists of the three (3) crystals seen above! Natural amethyst, citrine & a carnelian nodule.