moonstone

[old lineman]

Bought a pound of moonstone rough four years ago decided the other day to try to cut it. The left is a piece test cut and the right is rough

 

[Roscue2]

n/t

 

[Roland58]

Hey lineman,
Looks like you did a dandy job of cutting the stone. I know absolutely nothing about the process, so, I have to ask, "What did you use to cut the stone and did you tumble it after cutting?" However, you did it, it looks great!

 

[old lineman]

First I cut the rough with a diamond trim saw to rough shape it, then I use a 100 grit diamond wheel to do the rough grind, then I go to 220 grit silicon. After that I go to 320 grit silicon, then to 600 grit silicon and finally I polish it on a leather 6" disc charged with ccp polish. Sometimes with agate and jasper for the final polish I put it in a vibrating tumbler with other agate. That's basically the process.

 

[Densuke57]

I do a lot of Gem Mining in NC and have had many of my rough stones cut and faceted,
with great results! I have many rough Moon Stones, Amithyst, Sapphire, Citrine, Topas,
Termaline, as well as many stones yet to identify!

[size=large]Photo shows some of the Gem Stones Ifound in the rough and then had cut![/size]

Also, I use a tumbler, but having a problem completing the final polishing! I start out with
60 grit, 200 grit, 600 grit then Prepolish, but when I do final polish, I do not achieve desired
results! There is always a hazzy film on stones, after they dry. What type "Brand Name"
powder would you or anyone recommend?

Thank you,

Densuke

 

[old lineman]

Nice stones. I use a vibrating tumbler. I start out with 220 grit, then 500 grit, then cpp polish with ceramic media. With the ceramic media in the polish step, I can put an excellent polish on obsidian, which is sometimes difficult. Johnson brothers sells cpp.