13+ Is Tourmaline Water Soluble. Color zoning in precious stones is usually frowned upon, but when it comes to tourmaline, bicolor crystals or zoned crystals are a novelty and desired by jewelry makers and collectors. The lower esters containing the hydrocarbon chain less than five carbon atoms are easily soluble in water.
This makes it harder than many other crystals, including rhodonite and selenite, but softer than topaz or beryl. Black tourmaline can go in the water, and this is because it is a relatively hard crystal that scores around 7 on the moh’s hardness scale, so we can confidently presume that it is safe to. Being readily soluble in water, arihant group’s npk 13:40:13 helps fertigation by releasing essential plant nutrients at the root zone from where they are readily absorbed and used.
