You are purchasing a 3g pot of 'Moonstone Magic Dust' - a mica powder which creates stunning blue/purple/pink colour shifts as it is moved in the light.
When added into resin this chameleon mica forms cloudy, white nebulaes with shimmering tones of blue through to lilac and pink and slight hints of green. The more powder added, the more opaque an effect you get. The less powder added, a more subtle colour shift of shimmer is achieved with less of a white cloud appearance.
The final 3 photo in the listing shows what it looks like in clear, cured resin with quite a high powder content.
This mica powder has been ethically sourced and cruelty free.