Why does the tint appear more green in miyota than eta lacos?

[usc1]

They both use C3 but the lume appears very green on the miyota by comparison.

I had the miyota type b and one of the things i did not like was the green hue. I prefer it more white in appearance.

Thanks.

[Janne]

Maybe stupid, but could it be the crystal?
ETA powered use Sapphire, and the Myiota uses Mineral?

( the W2 originsls had a Kryptonite green lume, faint now, but still visible)

[usc1]

The mineral and sapphire a different index of refraction but I think they are close. It maybe the crystal.

I been reading that there are two grades of C3 as well. The cheaper normal grade C3 and the grade A C3 which glows 25% brighter and lasts longer. I would imagine the miyota has the normal grade due to costs.

I am still not sure.