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Lapidary / Gemstone Community Forum
February 21, 2019, 10:05:54 pm
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Minimum Cab Hardness

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Author Topic: Minimum Cab Hardness  (Read 115 times)
jyanna
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« on: January 23, 2019, 03:34:28 pm »

I hope this isn't a dumb newbie question, but is there a minimum recommend hardness for a cab?  Thanks in advance!
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SSA
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« Reply #1 on: January 23, 2019, 08:10:00 pm »

Kinda depends on what your end use for it would be.  I would avoid using a soft/fragile stone type in a ring or bracelet as these will usually see more potential damage.  Some of your softer stones may not polish as well but sometimes having that "satin" look is desirable.
So what are you looking to cab?
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Robert
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« Reply #2 on: January 23, 2019, 10:40:14 pm »

I do not know about a minimum, but I like my cabbing material to be at least a 6 on Mohs scale..
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jyanna
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« Reply #3 on: January 25, 2019, 05:27:57 am »

I was thinking of cabs in general because it seems to me that all would be subject to wear.  Thanks for the advice!
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slabbercabber
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« Reply #4 on: January 25, 2019, 06:12:09 am »

Some classic cabbing materials are relatively soft.  I certainly would not refuse to cab Lapis lazuli just because it is a five.
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Taogem
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« Reply #5 on: January 25, 2019, 10:58:51 am »

Some classic cabbing materials are relatively soft.  I certainly would not refuse to cab Lapis lazuli just because it is a five.

Very true !
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