Carbon
Carbonado is also known as black diamond.
A diamond comes to mind. It is a pure form of carbon. Hope this answers your question. Graphite - another form of carbon. Also Gold. And of course, although on rather than in the Earth, the atmospheric gases.
Carbon. Diamond and graphite (pencil lead) are allotropes of carbon, meaning different atomic arrangements of the same element. They are also both covalent network solids.
The stone carbonado is also known as black diamond.
Diamond transparency -- also known as clarity -- varies from none to flawless, depending on the quality of the diamond.
Yes, sometimes.
The number of protons, also known as the atomic number of the element.
Diamond is an ELEMENT. It is NEITHER a compound NOR a mixture. Diamond is a molecule composed of only the atoms of carbon , in a very specific arrangement. In diamond, any one carbon atom is combined to four adjacent carbon atoms in a tetrahedral arrangement (like methane). This tetrahedral arrangement tesselates to become a diamond ( that you can hold). This arramngement of carbon atoms is known as the 'Adamantine' structure. It is also one of the three ALLOTROPES of Carbon. The others being graphite and Buckminster Fullerene(Footballene). NB Do NOT confuse the words 'Allotrope' with 'Isotope'. They have totally different meanings.
jello
Idaho is known as the "Gem State"
Diamond, for one. Also, gold, silver, lead, mercury, to name just a few.
You're thinking of carbon. Both pencil lead and diamonds are allotropes of carbon.