Phenakite:
Eucryptite:
Willemite:
Colorless phenakite – 0.50 ct – Unknown locality
Gray eucryptite/albite – 1.56 ct – (Londonderry, Nepean, Coolgardie), Australia
Eucryptite is intergrowned in albite, this spectrum shows only albite features.
Very-light-yellow willemite – 0.42 ct – Franklin, New Jersey, USA
