Ruby Zoisite 8x10-9x13mm Side Drilled Pebble - 15-16 Inch Color_Black followed by a mild heat

followed by a mild heat treatment gives it the bright yellow color

Named in honor of Johann Nepomuk von Fuchs

suitable for those with sensitive skin

cobalt or nickel

potassium or barium

Ruby Zoisite 8x10-9x13mm Side Drilled Pebble - 15-16 Inch Color_Black followed by a mild heatRuby Zoisite occurs naturally when small Ruby crystals become embedded within Zoisite. The Ruby inclusions in this stone are pink to reddish purple to dark purple, while the Zoisite is light to medium green. Ruby has long been considered one of the most beautiful and valuable gemstones on the planet. It is also one of the hardest, second only to Diamond. At times in ancient history, Ruby was valued more highly than any other gem, including Diamond.