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Author Topic: Discuss: The Sparkling Science of Gemstones  (Read 8038 times)

Offline thedoc

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Discuss: The Sparkling Science of Gemstones
« on: 05/11/2009 10:57:15 »
Stunning sapphires, dazzling diamonds and red rubies abound in this week's sparkling edition of the Naked Scientists in which we find out how gemstones are formed, what makes them so beautiful and why they're so rare.  We also reveal the tricks used by experts to flush out fake stones, and discover how synthetic diamonds can make better lasers, more powerful electronics, sweeter tweeters and cutting-edge scalpels.  Plus, why a mongoose could be your best friend in a minefield, how a good breakfast leads to more male births and, in Kitchen Science, how to grow some beautiful crystals at home!
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Offline thedoc

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Discuss: The Sparkling Science of Gemstones
« Reply #1 on: 05/11/2009 10:57:15 »
Posted on behalf of John Blinke.

Dr. Chris-
On your show about crystal growing, you invited listeners to send you the results of crystal growing experiments. Here are some I grew a long time ago.

The ones at the bottom of the picture are flat because they grew on the bottom of a petrie dish. The large ones at the top were suspended on fishing line, so they grew in their true, complex, octahedral form. All the clear crystals are alum (ammonium aluminum sulphate). The big dark one is really a very dark red color. The big, light yellow one is some other chemical that I found in a crystal growing book. I don't remember what chemicals the colored crystals were. The cloudy surfaces on the big ones are a result of plastic spray I applied to protect them.



I love your Podcast. Please keep doing it.

John Blinke
Rochester hills, Michigan, USA
 

Offline Reephy

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Re: Discuss: The Sparkling Science of Gemstones
« Reply #2 on: 12/10/2012 13:09:39 »
Hey. What would be a great name for a gemstone based science fair project?
 

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Re: Discuss: The Sparkling Science of Gemstones
« Reply #2 on: 12/10/2012 13:09:39 »

 

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