HongJinTian Natural Rock Crystal Quartz Stone Pyramid Triangle APPROX. W2.09inches Natural quartz crystal pyramid, base width APPROX.2.09Inches with Error +/-3mm. It is a powerful stone for meditation and magical work Sizes vary slightly. Perfect for Healing, Manifestation, Chakra Balancing, Energy Magnification, Protection Promotes a positive flow of energy in your home or sacred space