Chlorine would be one.
The igneous rock peridotite has a very high color index. It is comprised of more than 95% mafic minerals (like olivine), giving it a dark green color.
The mineral responsible for giving water its green color is copper.
The green color of an emerald gem is due to trace amounts of chromium in the crystal structure. This impurity is responsible for absorbing certain wavelengths of light and reflecting green light, giving emeralds their distinctive color.
Mineral color is caused by the absorption, or lack of absorption, of various wavelengths of light. The minerals that are used to make the color bright green are copper, nickel and barium.
The color of barium in flame is pale green.
The presence of irradiated nitrogen trapped in the diamond's crystal lattice is responsible for giving diamonds a green color. The exposure to radiation causes the diamond to absorb light differently, resulting in the green coloration.
Because of the chlorophyll is the is the pigment that gives their green color.Aside from giving plantstheir green color,chlorophyll is involved in the reproduction of food in plants.
Emeralds are green gemstones that contain the element chromium, which is responsible for their color. This element gives emeralds their characteristic rich green hue.
Olive green is a color that is similar to an earthy green tone. It has a mixture of green and brown undertones, giving it a natural and earthy feel.
Greenstone is green due to the presence of minerals such as chlorite, actinolite, or epidote in its composition. These minerals contain elements like iron and magnesium that give greenstone its distinct green coloration.
chloroplasts
Chlorophyll is usually green in color, and chloroplasts, the organelles where chlorophyll is found, are also green. This green color comes from the absorption of red and blue light by chlorophyll, with green light being reflected and giving plants their characteristic color.