Iolite 10mm Round A Grade - 15-16 Inch K2 Granite sold a piece of Green

sold a piece of Green Tourmaline to Tiffany & Co

black with snowflake patterns

The best available information indicates that the stone is a type of Dolomite that has been altered by volcanic activity

and may also be referred to as Jacktree

Micas are fairly light and relatively soft

Iolite 10mm Round A Grade - 15-16 Inch K2 Granite sold a piece of GreenIolite most commonly occurs in shades of blue to gray, violet or indigo. It displays a visual property called pleochroism, which means that it can appear to be different colors as it shifts in the light. According to Norse legend, Viking explorers used thin pieces of Iolite as the worlds first polarizing lens to help them determine the exact location of the sun for navigation.