The
results of the astrological gems stones is due to its refractive index . In
fissure filling gems stone the pores of the stones are filled with the
chemical like silica under high temperature to create transparency and
brightness. Due to additions of the chemical and its fusion at high
temperature the property of the stones changes and so does the
refractive index of the stones. This is the reason that this stone will
not exactly catch the wave length of the planet they represent and thus
will not give results.