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Posted (edited)

Hi, i don't like to say is this or this stone because i don't know to much like other here.

But agate has a vitreous luster i think and this stone have metallic luster i think.

In photo looks metallic. And   translucent stone don't have metallic luster as i read .

So, the reflective luster in photo is metallic, vitreous or something else????

 

Edited by ivigo
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The stone has a vitreous luster. Meaning like glass.  

Metal has a metallic luster. You don't have metal.

The "metallic" sheen you are seeing is where your abrasive wheel was turning too fast and burnished the silicon carbide into the stone. It is not a quality of the mineral but a result of the abrasive wheel burnishing instead of cutting. 

A little wet sandpaper working by hand and that "metallic luster" will disappear.

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Posted (edited)
48 minutes ago, Bedrock Bob said:

The stone has a vitreous luster. Meaning like glass.  

Metal has a metallic luster. You don't have metal.

The "metallic" sheen you are seeing is where your abrasive wheel was turning too fast and burnished the silicon carbide into the stone. It is not a quality of the mineral but a result of the abrasive wheel burnishing instead of cutting. 

A little wet sandpaper working by hand and that "metallic luster" will disappear.

Hi Bob, sorry but you are wrong. I have already made with wet sandpaper and the metallic luster is more. This luster is from the stone.  If you sanded more with wet sandpaper the stone have more brilliant luster.  The truth is i sanded the stone with wet sandpaper more than a half hour. But i use 400 sandpaper. 

So tomorrow i make what you say with 100 wet sandpaper. I am very curious about the result. 

But i need to ask, if this metallic luster is from the stone what are mean that??

Edited by ivigo
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2 hours ago, ivigo said:

 

So tomorrow i make what you say with 100 wet sandpaper. I am very curious about the result. 

, , Be careful telling  Zeus, er, "Bob", he is wrong, or you might find yourself in Hades....

 

1000grit?

Edited by Stillweaver hillbelli
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It sounds like Swellbelly Hillbeaver is intimidated by knowledge and experience. So much so that he can't stop the childish insults and name calling.

Grow up man.

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5 hours ago, ivigo said:

Hi Bob, sorry but you are wrong. I have already made with wet sandpaper and the metallic luster is more. This luster is from the stone.  If you sanded more with wet sandpaper the stone have more brilliant luster.  The truth is i sanded the stone with wet sandpaper more than a half hour. But i use 400 sandpaper. 

So tomorrow i make what you say with 100 wet sandpaper. I am very curious about the result. 

But i need to ask, if this metallic luster is from the stone what are mean that??

Then what you are seeing may be labradorescence. Not luster. Bytownite often has a "mirror like" play of light that could be described as "metallic".

The stone is not metallic. It does not have a metallic luster. It is glassy and has a vitreous luster. You are describing what you see as a "metallic luster" and I understand. But you are using terms that mean something entirely different.

 

 

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Looks like carnelian, I type of microcrystalline quartz

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On 6/12/2020 at 9:38 PM, Bedrock Bob said:

It sounds like Swellbelly Hillbeaver is intimidated by knowledge and experience. So much so that he can't stop the childish insults and name calling.

Grow up man.

I was sticking up for you( your knowledge of geology is inspiring) and trying to complement you at the same time.

No attempt at insult.

May be I  have the wrong god. Would Poseidon be more suited since he was god of the underworld, and, rocks are , well, formed underground?

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