The Rock Professor has provided you with a mineral
information card. Print on stock paper, and cut out to
enhance your rock and mineral products.
To print: with your cursor, highlight the entire card below, right
click and select print, then click on "selection" and print.
THE ROCK PROFESSOR
Chemistry: Silica, SiO2 ♦ Variety: quartz ♦ Transparency: transparent to translucent ♦ Luster: waxy ♦ Crystal system: Amorphous ♦ Moh's hardness: 7 ♦ Color: White to grey, light blue, orange to red, black ♦ Localities: Worldwide. Our agates come mostly from Brazil, Mexico and the U.S.