How can I be sure that something is made of quartz and not glass?

Haze Mister

Verdant Bloomer
Manufacturer
The Chinese suppliers need to earn my trust....
 
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Haze Mister,

Hippie

Well-Known Member
Elev8GlassGallery did a piece about that on their blog ....
 

Thick Vape

In the Ballpark
I would heat it with the torch and shock cool it in water.
If it stays intact it is quartz. Glass will be gone by that time.
 
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