Blue Chalcedony Cross Bracelet. 925 Silver Cross with Sapphire CZ stones and 5 mm Faceted Blue Chalcedony. Gives feelings of light-heartedness and optimism. Improves self-perception. Aids regeneration of mucus membranes. Enhances the immune system. Blue Chalcedony has an anti-inflammatory effect and lowers temperature and blood pressure. Heals the lungs and clears the respiratory system of the effects of smoking. Length: 6.88" (17.5cm) Width: 1.96" (5cm) Height: 0.98" (2.5cm) Diameter: 0.19" (0.5cm) Weight: 0.3 oz (8.75gr)