Ruby Zoisite 6mm Round 15-16 Inch Color_Gray This effect is known as

This effect is known as “labradorescence

It’s believed that Kublai Khan once offered an entire city in trade for a sizable Ruby

Naturally occurring in hues of blue-green to green with spots and streaks of red

this semi to precious variety of quartz is found in many locations around the world

Spinel is a hard vitreous magnesium aluminum oxide

Ruby Zoisite 6mm Round 15-16 Inch Color_Gray This effect is known asRuby 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.