Labradorite Palm Stones - 100 pounds*Locality: Madagascar *Requires 150lbs of shipping space Color: Labradorite typically displays a range of colors including gray, green, blue, and yellow, often with iridescent flashes of colors such as blue, green, yellow, orange, and sometimes even purple and pink. This effect, known as labradorescence, is caused by light interference within the stone's internal structure. Hardness: Labradorite has a hardness of about 6 to 6. 5 on the Mohs scale.