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Welcome new members & old from the Lapidary/Gemstone Community Forum. Please join up. You will be approved after spam check & you must manually activate your acct with the link in your email

Congratulations to irockhound and his Mexican Sagenite Cab!

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Another cabochon contest coming soon!

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 1 
 on: Today at 05:45:59 PM 
Started by veesix - Last post by veesix
We went to Lavic Siding in the Mojave Desert a few weeks ago to hunt for agates and jaspers. We found a few of these translucent green pieces. Any help with identification? Let me know what other info I can provide. Thank you!

Also, any thoughts on what you might do with a piece like this?

 2 
 on: Today at 05:16:15 PM 
Started by veesix - Last post by Barclay
i agree with Slabbercabber, you have created a VERY dangerous machine for the following reasons.

1) I don't see that the grinder is set up for water.  That likely means that the electrical is not protected from water.  Water + electricity is bad.

2) The grinding wheels are not designed to be used with water.  One of the limitations of the old silicon carbide type wheels (and these) is that they have to be spun completely dry otherwise one part of the wheel with water is heavier than the rest of the wheel.  The heavy part of the wheel comes apart explosively.  I saw a video yesterday of a guy who died when a wheel exploded into his chest.  To use the diamond flat disks it looks like you have to take off the wheel guards which increases your risk.  When the equipment manufacturer puts a safety device on the equipment it is a good bet it is needed.

3) Using this grinding machine without water cooling (as designed) will cause your rock to heat up a lot.  You cannot dunk the rock in water enough to keep it cool, plus we are back to getting the wheels wet again.  If you are lucky the rock will just keep falling off of your stick.  If you are a little unlucky it will crack or break up.  If you are very unlucky it will shoot pieces of the rock back at you.

This equipment was not designed for rocks and cannot be made safe to grind rocks.  Ameritool makes a very good simple swap top grinder at around $450.  I have one and love it.  Stay away from Inland Lapidary as their machines are junk (had one of those also).

 3 
 on: Today at 04:50:53 PM 
Started by Stonemon - Last post by Stonemon
I have been working up some material that my father or grandfather collected some time in the middle of the last century.
I cut up a small piece of jasp-agate and found what I think are pockets of calcite included in the rock.
The faces of the crystals flash nicely when you rotate to a certain angle and some of them show "rainbow" fractures.
Any ideas about where this might be from? Has anyone seen this before?  :dontknow:
Thanks,
Bill

 4 
 on: Today at 04:10:57 PM 
Started by veesix - Last post by socalagatehound
Welcome from cloudy San Diego!

Craig aka socalagatehound

 5 
 on: Today at 03:06:21 PM 
Started by veesix - Last post by veesix
Your speed is still too high but that is nothing compared to the danger you have introduced.  Bench grinding wheels are meant to have pressure on the perifery only.  The binder is literally glass.  When one of these comes apart the velocity is similar to bullets from a gun.  I suggest you replace the wheel with one made of plywood.
Ok, thanks for the info.

 6 
 on: Today at 02:48:30 PM 
Started by Quitclayton - Last post by Quitclayton
I don't have much information to give you on these stones. I pick up about anything laying about to practice one, and I found these mixed in with some decorative stones beside our sidewalk, so no idea of where they came from apart from most likely a bag of rock from Lowe's.

They do polish up nicely though, and the teardrop shaped cab has more depth than the pic shows. The rock is somewhat soft and seems light for its size. Any thoughts would be appreciated because when someone asks what they are I call them ''dem purpley specked ones I found by mom's sidewalk'' and that takes way to long to say.

redstones.JPG
*redstones.JPG (24.37 kB . 800x450 - viewed 15 times)
redstone1.JPG
*redstone1.JPG (20.58 kB . 800x450 - viewed 15 times)

 7 
 on: Today at 02:34:58 PM 
Started by veesix - Last post by Quitclayton
Welcome from another newbie!!

 8 
 on: Today at 02:06:04 PM 
Started by veesix - Last post by Slabbercabber
Your speed is still too high but that is nothing compared to the danger you have introduced.  Bench grinding wheels are meant to have pressure on the perifery only.  The binder is literally glass.  When one of these comes apart the velocity is similar to bullets from a gun.  I suggest you replace the wheel with one made of plywood.

 9 
 on: Today at 02:02:09 PM 
Started by veesix - Last post by hummingbirdstones
Welcome to the forum, Eugene, from Northern Arizona!   :hello:

 10 
 on: Today at 01:59:57 PM 
Started by irockhound - Last post by AgateMan713
Woww those are awesome wish i could find stuff like that around my area but wouldnt know where to look.

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