Crystal growing: potassium alum

Potassium alum, an old favourite in crystal growing at home. In childhood, I read a book on crystals, and it mentioned this compo

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How to grow Alum crystals (Aluminium Potassium Sulphate)

タキオン神聖幾何学水晶発振器 【ピラミッド】 - 置物

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Science, and some sparkle! Kids can grow crystals in this national

Purified Alum powder ( Potassium Alum Powder )(phitkari) by mi

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Why do alum (potassium aluminum) crystals make octahedral shapes

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Faceted growth rate estimation of potash alum crystals grown from

Crystal growing: potassium alum