Garnet is metamorphic, it is used mostly as jewelery. Slate, used for building or decorations, chalk boards, and the tables in science class for lab are usually made of slate. There are many more. The impotance of rocks to human beingsSome rocks are hard. Diamond is the hardest rock. Some rocks such as chalk are not so hard. We use rocks in many ways. We construct buildings out of rocks. We also use rocks called precious stones in jeweler. Diamonds, rubies and sapphires are precious stones. Rocks are used in several other ways. Most rocks have rough surfaces. Look at some natural rocks with a magnifying glass. You will find that they are made up of small grains. These are called minerals. Some rocks are made of only one mineral. Others have several minerals. They may be of different colors. Some of the minerals found in rocks contain metals such as iron or aluminum. These rocks are dug out from the earth and the metals are taken out for our use. Clay has very tiny pieces of rocks. It therefore feels smooth. Sand has larger pieces, which can easily be seen. Fine china pots are made of clay called kaolin, which contains a mineral called kaolinite. The chalk with which you write on the blackboard is a soft. Chalk is made up of white rock. Glass is made from quartz sand-tiny grains of mineral called quartz. Blackboards are made from slate- a dark rock. Yes people use rock and minerals, for two purposes. First purpose is that these minerals are used in the food to add taste for example salt. Second purpose for the use of minerals it that our body requires these mineral for variety of reasons for example boron:Promotes healthy bones, teeth; metabolism of other minerals. Calcium is used for blood clotting, intracellular signaling, and muscle contraction. Rocks are important to our everyday lifes because Mineral come out of rocks and our transfered to water soaps sodas food etc; That is why rocks our important to our everyday lifes. A volcano in an opening in the earth's crust from which materials such as magma and gases are rejected. A volcano can also refer to a fracture such as a mountain built by eruption from such an opening. Rocks are around us everytime we use for art pencil and more. You can use Quartz to make fire. Rocks are an integral part of our lives in many ways from the food we eat to the jewels we haveHalite, a mineral is used in table salt. It is crushed up first, so you can eat itFor food such as salt , and jewelry medicine and electricityDiamond is used for jewelry. On pencils, food, in our house, like everywhere! In Afghanistan people use rock to kill adultery. LolRocks are important to everyday life because rocks are good in mud piesRocks are good I don't have a reason why thought... I did not know people ate minerals