Ammonium Zinc Sulfate

Formula: (NH₄)₂Zn(SO₄)₂·6H₂O

Extremely shiny, extremely transparent: one of the best candidates for crystal growing.

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Ammonium tetrachlorocuprate

Formula: (NH₄)₂[CuCl₄]

Blue crystals, obtained when ammonium chloride NH₄Cl is crystallized together with copper(II) chloride CuCl₂.

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Ammonium bis(sulfamato) chlorocuprate

Formula: (NH₄)₂[Cu(SO₃NH₂)₂Cl₂]

An unusual coordination complex of copper, producing dark blue crystals.

Similar compounds: + Potassium bis(sulfamato) chlorocuprate, K₂[Cu(SO₃NH₂)₂Cl₂]. + Potassium bis(sulfamato) bromocuprate, K₂[Cu(SO₃NH₂)₂Br₂].

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Sodium ammonium sulfate

Formula: NH₄NaSO₄·2H₂O.

Artificial analog of the mineral lecontite.

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Ammonium Alum

Formula: NH₄Al(SO₄)₂·12H₂O

The biggest specimen in my collection. Mass is 45g, growth time is 4 months.

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Formula: NH₄H₂PO₄ This compound, also known by its abbreviated name ADP, together with its chemical sibling, potassium dihydrogen phosphate(KH₂PO₄, abbreviated names is KDP) are one of the standard compounds in crystal growing kits. It is safe and produces large elongated crystals easily.