A pencil is not grown; it is primarily made from materials that are mined. The core of a pencil is typically made of graphite, which is a form of carbon that is extracted from the Earth through mining. The wood used for the pencil's casing usually comes from trees, which are grown and harvested. Thus, while some components are mined and others are grown, the pencil itself is manufactured, not directly grown.
The black stuff in the middle of the pencil is a mixture of graphite (an element that is mined) and clay.
Apparently, lab-grown diamonds and mined diamonds from the earth, when cut and polished are both weighed in carats. It is important, however, to document any lab-grown stone as such. Note that Gemological Institute of America certification for lab-grown stones will always note their origin and provide the four Cs, and apparently the European Gemological Laboratory can grade lab-grown stone. You can read more, below.
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The tip of a pencil or the writing part of a pencil is called graphite.
The black stuff in the middle of the pencil is a mixture of graphite (an element that is mined) and clay.
gold
No. Salt is mined, not grown. A crop is something that is grown -- plants.
Man-made synthetic substances such as glass and plastic can't be grown or mined.
The main crops grown in this country include wheat, corn, and soybeans. Mining is also a significant industry, with resources such as coal, iron ore, and copper being mined.
It isn't. It's made from oil.
Everything you own and use everyday is either mined or grown.
No. Only things that are grown are harvested. Asbestos is a mineral and is mined.
Pineapple, papayas, mangos, bananas, vetiver, sugar and coffee are some of the things grown there. They mine precious gems.
A natural diamond is one that is mined from the earth. One that is grown in a laboratory would not be a natural diamond.
Gold is a transition metal element. It is occasional found as a native metal but it is generally mined in the form of ores, which are then refined to produce Gold metal, it isn't grown.
YesAdditional AnswerIt is also possible to 'grow' diamonds in a lab, but coal cannot be 'grown'.