An 1uH resonates at 500 MHz with about 0.1 pF parallel capacitance. To be "a stable inductance" at this frequency, the parallel capacitance must be considerably smaller than 0,1 pF. Sounds illusional indeed.
Just for yucks, I checked coilcraft. Much to my suprise, if you use two 491 nH coils in series, you can just squeek by.
I would orient the two coils at 90 degrees to one another. Depending on your application, you might want to place a resistor in parallel with each coil to de-Q any resonances.