Free Republic

….How Are the 15 Best Diamond-Selling Hard Rock and Metal Albums Certified?We've ranked these 15 albums in terms of quality, but we've also included the certified sales for each one. Those stats came directly from the Recording Industry Association of America's website.While some albums — such as Metallica's Black Album — were re-certified as recently as 2025, others — such as ZZ Top's Eliminator — haven't been re-certified in decades. That means some of the albums on this list have sold more — possibly millions more — copies than their certifications indicate. Nevertheless, in the interest of fairness and accuracy,...