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Posts posted by d_day

  1. 2 hours ago, Bedrock Bob said:


    I know tool steel is alloyed with nickel but I have no idea why your test didn't show it. Or if the tools you tested were alloyed with nickel. 

    It's worth experimenting though. No matter how many eye rolls you get.

    I hope you have some irons. That would be awesome!

    A lot of tools are chrome plated to prevent rust. That could prevent nickel from reacting with the reagents.

    • Like 1
  2. Side note:

    My great grandmother is the person that discovered and named silver lace onyx. It’s so named because it actually contains silver. 

    Some pieces contain a red mineral called realgar. It’s an arsenic mineral and is poisonous. It’s safe in its current form, so long as you don’t lick it or expose it to acid. Here are a couple more pictures of stones I’ve cut.



    • well done 1
  3. It’s almost certainly calcite “onyx.” I’m about 90% sure it’s a type they call “silver lace onyx” from near Calico, CA.

    The .925 stamped inside means the metal the ring is made from its sterling silver. 

    Here’s a couple of pieces of silver lace that I personally collected and cut.

    Edited to add: sorry the pic is blurry. It’s the only one I’ve got and I’m not at home to take another. These stones are a similar size to the one in your ring.


    • Like 2
  4. 19 minutes ago, Caliche Chris said:

    Those sure look a lot like the rare garnets that have the “star” in them. I forget what it’s called but when you polish them up they have a cool affect and show a asterisk looking star on the face of the stone when seen in the right light. An old lady gave me a big jar of them. They are so purple they are almost black unless you put a light behind them. 


    • Like 1
  5. My first impression was garnets, but there was no size reference. The container I could see made them look much larger than they are, which made me think they might be sard. Now that we’ve got a size reference I’d say they are most likely garnets. I’d still like to know the hardness and specific gravity before concluding they are garnets, but at this point I’m at about 95% that that’s what they are.

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