is an Hydrated Iron Manganese Aluminum Phosphate Hydroxide with formula
(Fe, Mn)AlPO4(OH)2 - H2O and hardness of 4.5-5.
Is a rare mineral that forms thin tabular or bladed small crystals,rarely clean, oftent translucent to transparent and cut stones are quite small.
It comes from Brazil. This gem here has some visible inclusions.
Size: 11.5x4.9x3.7 mm.