Peach moonstone beads Color: peach with an adventurous effect. Sizes between 4 and 10 mm. Country of origin: India. Moonstone gemological information: Possible colors: color in the mass, generally colorless to white, gray, orange, brown, green. Namely: feldspar family. Density: between 2.56 and 2.59. Hardness: 6. Crystal system: triclinic. Fracture: irregular, conchoidal. Cleavage: perfect. Polariscope: anisotropic. Generally opaque, does not restore because it is unobservable. Refractive index: Np: 1.518 to 1.529. Nm: 1.522 to 1.533. Ng: 1.522 to 1.539 Birefringence: 0.007 to 0.009. Chelsea filter: generally no modification. Spectrum: indistinct.