New Mineral Named After GIA’s John Koivula
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 Post subject: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 10:17 am 
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Name this stone first (* see rules at bottom) and you will win a free download of Gemology Tools Professional 8.4 (software for the professional gemologist, the gemology student or the gemstone enthusiast).

1) Our mystery stone is brown in color. Does that narrow it down for you?

2) It is transparent. Gee, no help there either. Still over 100 possibilities.

3) It is doubly refractive biaxial positive (DR B+). That helps a bit.

4) It has abraded facet junctions. That helps a lot.

Well, that should narrow it down to just a few possibilities. I doubt if this stellar group needs any further help but if so I will list the defining clue in a few hours.

*Rules: you may only put one stone in your answer. If you list several stones and one is the right one it DOES NOT COUNT. If you already own GT Pro 8.4 let others play. Thanks!

PS: Just to push GT Pro a bit: Elapsed time using these clues <30 seconds. If it takes you 30 minutes maybe you'll want to...

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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 11:11 am 
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ZIrcon

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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 11:16 am 
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Jason!
You don't own GTP yet?
I'm shocked!
Good luck on your guess.
:D


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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 11:19 am 
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Barbra, I have an older version. 'Bout 3 years old I think.

J-

PS: I did not consult it for my guess. ;)

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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 11:23 am 
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Sorry Jason,

Zircon is DR U-. Our stone is DR B+.

Also, if you own a previous version of GT Pro please refrain from using it (just to keep it fair for those trying to win their first copy).

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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 11:31 am 
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Am I supposed to post my answer here, I sent mine by PM??


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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 11:47 am 
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Yes Raw, please post your answer here. That's the only way you can win. I haven't even looked at your PM.

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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 11:53 am 
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My answer is brown sphene

HUK

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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 12:09 pm 
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Hi Osman khattak,

Very good guess. Meets all the requirements. However, our stone is different.

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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 12:12 pm 
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Darn, I guessed sphene also. I will be shopping soon :roll:


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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 12:38 pm 
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I'm guessing enstatite. Didn't use my GT Pro.

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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 1:01 pm 
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Good guess ROM, but that isn't it.

OK, I'm going to make it easy for some one. This is a very soft stone (hardness less than 4).

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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 1:39 pm 
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Crocoite? (5 minutes in 'Tables of Gemstone identification' brought 5 possibilities but I'd never even heard of the other four :roll: )


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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 1:44 pm 
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my second answer is Barite.
HUK

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 Post subject: Re: Win Quiz: Win GT Pro Download
PostPosted: Sun Oct 10, 2010 1:45 pm 
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Good guess Tim. But not the stone.

This will ice it: Specific Gravity: 4.50

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