Colombia, Color: Red, Orangey Red, Orange, Yellow, color shift to Green, Hardness: 6 6.5, Refractive index: 1.55 1.56, Density: 2.66 2.70, Chemical composition: (Na, Ca)(Si, Al)4O8, Crystal structure: triclinic, Origins: Congo, Tibet.
The origin of celestine is chiefly sedimentary. It occurs as cavity or, fissure fillings, Southern and central Africa, Sixth Edition (2006)
Red, Yellow, White, gray, Green, Yellow, Red, Colorless, gray, Yellow, Green, White
Colorless, Blue, Brown, Colorless, Green, gray