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.
Step 3: Bake chicken breasts. Bake chicken breasts, uncovered, for 18 to 20 minutes or until no longer pink (use a meat thermometer to confirm that the chicken is heated through to 170 degrees F). To store: Let chicken stand for 30 minutes to cool.Individually wrap chicken breasts in waxed paper.ake chicken breasts, uncovered, for 18 to 20 minutes or until no longer pink (use a meat thermometer to confirm that the chicken is heated through to 170 degrees F).