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.
In this Article. In this Article. Cortisol is a hormone your body releases when youâre under stress. Your doctor may want you to be tested to see if you have the right level of cortisol in your blood. Cortisol is made by your adrenal glands -- two small glands that sit on top of your kidneys.