Great for grounding, stubborn Earth sign Capricorn would do well to carry black tourmaline on a regular basis. A variety of quartz, the mineral guards against negative energies, and even psychic attack. Its detoxifying properties will literally repel bad vibes and protect its wearer. Ocean jasper, a beautiful multicolored variety of jasper, is also a protective stone ideal for Capricorn. It's popular for both its rarity and the ability to release pent-up residual emotions and blockages…