Color: Many Colors (opal changes color) Opal, the only gem that doesn't fit into any single description of a precious stone, is the birthstone for October. It is said that no two opals are exactly alike. But it is sensitive to moisture and is more fragile than its fellow gemstones. It displays a brilliant array of colors which dazzle the eye.
1: When you are faced with stressful situations, cortisol, epinephrine, and norepinephrine are released by your. kidneys.
Making the world better, one answer at a time. Cortisol is a glucocorticoid hormone released from the adrenal glands (which are intimate to the top of your kidneys) in response to stress. Cortisol signals the release of sugar from the cells of the body in order to fuel the stress response.