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You've probably heard that glass is made from special sand, but what happens if you make glass from regular beach sand? What about VOLCANIC sand?! I've scoured the internet, ru and eng segments of YouTube, but I haven't found a normal answer to this question. What happens if you make glass from sand from 7 different beaches located in different parts of the world?! Well, here's the most relevant video on the internet on this topic! 00:00 - Introduction 00:21 - Preparing to synthesize glass 00:46 - First synthesis from sand from Sri Lanka 01:14 - Where do bubbles in glass come from? 01:42 - What other sands will we make glass from? 02:57 - Trying to melt volcanic sand from Altai and Vladivostok 03:55 - What happened to sand from Vladivostok and volcanic Altai? 04:35 - Welding - how to load more sand into the crucible 05:22 - We pour all 7 glasses from different sands from the beaches 06:30 - Let's look at the resulting glasses and discuss their color 09:42 - Conclusion