Mohs Hardness: 6 to 6.5 out of 10
Color: Pale pinkish orange and pink to moderate and strongly saturated reddish orange, red-orange and deep red. Red and green bicolor gems exist, but are extremely rare.
RI: 1.559 to 1.568 (+/-0.005), Oregon material commonly 1.563 to 1.572.
Clarity Type: Type II
Optic Character: Biaxial positive (often shows twinning in the polariscope)
Pleochroism: Oregon material might show very strong red and green pleochroism.
Spectrum: Not diagnostic
SG: 2.70 (+/-0.05)