It's only when they are cut and polished that they obtain the brilliance and luster that gives them their value. Historically, gems have been divided into precious and semiprecious classes.

Precious Metal Gems (PMGs) are a cornerstone of 90s basketball card collecting. These iconic parallels debuted in 1997-98 Metal Universe packs, which originally retailed for just $2.49.

"Discover ten rare gemstones that surpass diamonds in value. Learn about these precious stones and what makes them so extraordinary. See to Believe uncovers the forgotten, mind-blowing facts that will ...