 Dream Catcher Turquoise Sky Blue Small Cute Necklace Set White 925 Sterling Silver, 18" List Price: Sale Price: $20.00 You save: $5.00 (20%) |
believex123 asked:
I have 3 questions
1) If diamond is the hardest known substance, what mineral substance could be used to cut and polish it? Another diamond (not sure)
2) What is the simplest silicate chemical formula?
3) What do amethyst, petrified wood, and chert have in common?
I cannot find these 3 answers. Please help. Thanks
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December 13th, 2008 at 12:32 pm
1) Yes you can use diamond-tipped instruments to polish diamonds.
2) SiO2 is the simplest silica formula (silicon dioxide).
3) Amethyst, Petrified Wood and Chert are all silica in different forms. Basically they have the same chemical formula. Actually chert is really a sedimentary rock composed of primarily SiO2. But in terms of your question they all are made of silica(SiO2).
December 13th, 2008 at 7:34 pm
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