more semi-precious stones from my haul...

[chriswarrior]

i have no idea what these are; i would have thought glass if not for the rough side opposite the cut. they are clear light-bluegreen, translucent, largest piece is only about two inches. too thick to be beach glass.

still working my way through the semi=precious stone collection i inherited...



i thought this might have been ruby in Zoisite, but now i'm wondering if it's just one color of fluorite inside of another color of fluorite. didn't do a scratch test.



the next two pictures are the same stone, showing both the dark, rough, uncut outer layer and the purple/red inside layer. also thought this might be ruby in Zoisite, but it would be a very large piece. it measures about three inches across by 2.5 inches deep.




last photo isn't terribly clear, but it's a light blue cloudy stone interspersed with gray. it looks like Larimar to me, but i wondered if anyone else had a different guess. if it is Larimar, they are decent-sized pieces; the flat (cut) piece is about an inch square (nugget slightly larger).

 

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[Jim in Idaho]

I'm not going to hazard a guess, Chris, but it's all really nice-looking stuff. If you don't have one, you need a good digital scale, and learn to do a specific gravity test. That, along with hardness, will tell you a lot.
Jim

 

[chriswarrior]

i'm pretty loathe to scratch any of these, though i may do the purple/red/green ones in some inconspicuous location; if they're fluorite, they'll be soft. it's difficult to want to do a scratch test on the light blue-green; anything will show. i was checking a specific gravity table, but i didn't know you could figure it out with a digital scale?

 

[Jim in Idaho]

Sure...I don't want to explain the process here, but if you do a search, you can find it online. There are a couple of ways to do it, but both require an accurate scale. I always test my unkowns for SG, then hardness on a scratch plate. I'll look for the SG test and post a link.
Jim
EDIT:...SG test link

 

[tamrock]

To me the all aqua looking pieces in the first picture do look like broken glass. Maybe a busted insulator. Is there some rule of thumb on the dimensions of sea glass The second looks like a tourmaline crystal. The third I can only say reminds me of slag railroad ballast.

 

[chriswarrior]

i suppose there is no set dimension, but there is a normal process for sea glass being formed of broken glass pieces, mostly bottles. every time i've found sea glass it's bottle glass, and of a somewhat uniform thickness, about a half centimeter. this is over twice that thick. i suppose it could have been a broken glass sculpture that went overboard. or it truly could be pieces of glass that went into a rock tumbler (not sea glass at all).

the piece that you think is railroad slag is dark green with a red/pink interior - how does that fit? (i'm not sure what you mean by railroad slag)

 

[Crispin]

I agree with you on the first. It looks like a lot of sea glass I have run across. They sell very well for that color. Check out ebay. Nice sea glass has become desirable.