Emerald Characteristics. 1  Emeralds are the most precious of the beryl gemstones and related to aquamarine. 2  The word emerald is derived from the Greek word smaragdos and means green stone.. 3  Pure beryl is colorless. 4  The signature grass green color of an emerald is due to trace amounts of chromium and vanadium.
Place the baking dish with the chicken breast into the oven on the center rack and cook for 20 to 30 minutes, or until the middle of the breast reaches 160 degrees.
Place your pan in the oven. Set the timer for 30 minutes, or 45 minutes if you arenât planning to add sauce to the chicken. 1  Because you are cooking the chicken breasts frozen, you will need to increase the standard cooking time by 50 percent. If you do not want dry roasted chicken breasts, you can place the chicken in a non-stick dish. 2  Preheat the oven to 375 degrees Fahrenheit (190 degrees Celsius) to account for the fact that you will cover the dish. 3  You will bake it for approximately the same time.