Here's the actual top 10 over exporting countries of quartz. Not even in the top 5 for the US.
1 China $72,289,000
2 Turkey $68,161,000
3 India $43,827,000
4 Spain $27,107,000
5 Brazil $26,611,000
6 United States $21,351,000
7 Germany $16,791,000
8 Italy $13,219,000
9 Canada $12,225,000
10 Egypt $10,204,000
How else would the mega rich be able to buy up the property and rent out the spaces for normal people to finance?