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Author Topic: What polishing compound to use? heres a guide.  (Read 5195 times)

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MonVictorian

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Re: What polishing compound to use? heres a guide.
« Reply #15 on: September 13, 2017, 02:00:05 AM »

Hello,

I understand that sugilite is a cyclosilicate mineral.
What category of polish would sugilite fall under?

What category of polish would Labradorite fall under?

thx much in advance....

Regards Monica
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finegemdesigns

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Re: What polishing compound to use? heres a guide.
« Reply #16 on: September 13, 2017, 04:32:22 PM »

I've used cerium oxide, tin oxide, Poly-Al-F (Polishing Grade Aluminum Oxide) and Linde A.
All work but I think I prefer any of the last 3 over cerium oxide. (For sugilite and labradorite)
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Michael

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Re: What polishing compound to use? heres a guide.
« Reply #17 on: June 08, 2018, 03:10:21 PM »

These are great reference posts for polishing stones.  At one time I was using a 1725 RPM arbor and various wheels.  Other than diamond, this was way too fast and hot.   The reference to "cooking" the stone, esp with CO is spot on!    Now I have a dedicated arbor that is < than 900 RPM's and I can belt it down for amber and other soft stones up 5 MOHS.  Wish I had this info earlier, and saved a lot of needless work. Thanks to all. 
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