The differing structures has a slight effect on the overall yellow color of the group. Since the chemistry is the same, any change in the color of pure samples must be due to the structural differences. Dreyerite is typically orange-yellow to brownish yellow while clinobisvanite is just yellow to yellowish red, but pucherite is a dark reddish brown to less likely brownish yellow. Color is dark reddish brown to brownish yellow. Luster is vitreous to adamantine.
Crystals are transparent to translucent.
Crystal System is orthorhombic. Crystal Habits include tabular well formed crystals with curved faces and sharp angles. Also acicular crystals and earthy masses. Cleavage is perfect. Fracture is conchoidal.