Labradorite 4x5mm Tube Beads AAA Grade - 15-16 Inch Cape Amethyst Iron gives them blue

Iron gives them blue

meaning it becomes magnetically charged from heat or friction

Calcite is the principal constituent of limestone and marble

It is a particularly unusual gem because it exhibits a special optical property known as "tenebrescence

Red Garnet and Crystal Quartz

Labradorite 4x5mm Tube Beads AAA Grade - 15-16 Inch Cape Amethyst Iron gives them blueLabradorite is remarkable for the way its aggregate layers refract light, creating iridescent flashes of blue, gold, pale green or copper red. This effect is known as labradorescence, taking its name from the stone. Labradorite is usually gray to green, dark gray, light gray or black. It was discovered in Labrador, Canada in 1770 and named for the area, though it is referenced as a highly revered stone in much older Inuit tribal legends.