Roselite
Ca₂(Co,Mg)(AsO₄)₂·2H₂O
Roselite is an arsenate mineral recognized among collectors for its crystal form and distribution.
Roselite is a hydrated calcium-cobalt arsenate, prized by collectors for its intense rose-to-magenta pink colour and lustrous crystals.
The Bou Azzer connection
The Bou Azzer cobalt district in Morocco is a major source of fine roselite, where it forms sparkling pink crystal groups with other cobalt minerals.
What collectors look for
Saturated pink roselite crystal druses on matrix are the prize; colour and crystal sharpness drive value.