👉 Cummingtonite is a mineral that belongs to the silicate group, specifically the olivine group. It is primarily found in the rocks of the Southern Hemisphere and is also known as the "stone of the sun" due to its resemblance to the sun's glowing glow. The term "cummingtonite" refers to the specific type of mineral that this stone is. This mineral is often used in the construction industry, particularly in the manufacturing of building blocks and other structures made from sand