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Author Topic: Polishing Garnet?  (Read 289 times)

cliffsearch

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Polishing Garnet?
« on: November 12, 2017, 08:33:12 PM »
I have a nice Nigerian Garnet that I want to cut soon. The only thing is, so far I've only been faceting quartz based gems. So I use a Lucite Disc and Cerium Oxide with great effect. Can you polish Garnet on a Lucite Disc?  I've been cutting for about 4 months so sorry about the newbie questions. Regards Cliff
« Last Edit: November 12, 2017, 08:43:41 PM by cliffsearch »

Aussie Sapphire

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Re: Polishing Garnet?
« Reply #1 on: November 13, 2017, 07:31:10 AM »
I would not try to polish garnet with cerium.  That polish works best with stones in the 6 to 7 hardness range such as quartz.

You would be better to try aluminium or tin oxide with garnet.

cheers
Leah
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cliffsearch

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Re: Polishing Garnet?
« Reply #2 on: November 13, 2017, 09:05:25 AM »
I would not try to polish garnet with cerium.  That polish works best with stones in the 6 to 7 hardness range such as quartz.

You would be better to try aluminium or tin oxide with garnet.

cheers
Leah
Can you us Aluminium Oxide on a Lucite Disc? Thanks

Aussie Sapphire

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Re: Polishing Garnet?
« Reply #3 on: November 13, 2017, 09:57:57 AM »
Can you us Aluminium Oxide on a Lucite Disc? Thanks

Lucite laps are really old school and there are probably better options out there now but I dont see any reason why you cannot use Alumina in the same way as you currently use Cerium.  Would probably suggest not using both oxides on the same lap though.

cheers
Leah
Aussie Sapphire - The Lapidary Warehouse

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