Is a rare mineral with formula Ca6Al2(SO4)3(OH)12 - 26H2O , a Hydrated Calcium Aluminium Sulphate Hydroxide. The hardness is very low: 2-2.5 as well the specific gravity :1.7, much below the average .
It forms as a precipitate from hydrothermal solutions and is difficult to distinguish from Sturmanite. It is found on N’Chawning II Mine,Northern Cape, South Africa.
lower part of the stone is re- crystalized therefore it looks like a sugar. The color is a bright lemon yellow. A gem for collectors!
Weight: 2.01 ct.