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 Post subject: help needed Identifying stones. please!
PostPosted: Fri Sep 06, 2013 11:11 am 
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Is anybody able to identify these stones? Much appreciated:-)Image


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 Post subject: Re: help needed Identifying stones. please!
PostPosted: Sat Sep 07, 2013 1:10 am 
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The first thing anyone here will tell you is that it's virtually impossible to properly identify a gemstone just from a photo. More data is generally required, especially for faceted stones. Any identification from a photo is going to be, at best, a decent guess.
That said, for rough stones like these the guess is a bit better. The top stone is a polished Orthoceras fossil (a type of ammonoid). The "L" shaped stone in the center-left is likely a jasper/chert of some kind, perhaps mookaite. The stone to the left of it looks like a chip of flint. The red stone below appears to be carnelian, perhaps dyed. The stone below that looks like tigereye from the color scheme, and the stone to the right of the tigereye is likely pyrite.
For the others, the picture is too low-res, or the subjects themselves too ambiguous, to offer even a decent guess. You'd need to get more data to identify stones like those, like a refractive index or density measurement (aka SG/specific gravity, which is equivalent to density in grams/cubic centimeter). Now, some might be easier with a photo. The purple stone in the bottom left looks like it might have bubbles in it, which would be indicative of glass, but it could also be a surface texture, etc. etc.

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 Post subject: Re: help needed Identifying stones. please!
PostPosted: Sat Sep 07, 2013 4:38 am 
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absolutely agree with everything, Scarodactyl!! 8)

ciao
alberto

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