No. Sapphire is not made up of only aluminium. However, aluminium is present in this precious stone. The metal is found in many other precious stones too, such as ruby, topaz, turquoise and jade. However, their amazing colours are due to the presence of other elements.
Aluminium is an element commonly found across the globe. Although Man knew about this element for centuries, only recently did he start using it extensively. Aluminium is a well known conductor of electricity; and therefore, it is ideal for power cables. Due to its lightness, strength and protective qualities, aluminium is an easy choice for the manufacture of boats, car bodies, and aircraft parts.
Aluminium has some very unique characteristics. It is malleable, meaning it can be shaped into thin sheets. You may have seen thin foils of silver coloured paper for wrapping food items. Aluminium is used for packaging food and drinks. It is tough, yet light-weight, and does not rust. Aluminium reflects heat and light. All these qualities make it an extremely useful element.
Due to its utility, every year, 20 million tonnes of aluminium is produced from its ore world-wide. Its atomic number is 13, and the symbol is Al.
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