I AM CRYSTAL OF ENERGY

Stasa Banjanin 7/1

• My name is Stasa Banjanin. I am a student of 7th grade of elementary school ,, Branko Radičević ‘ in Smederevo, in Serbia. Many liked this project about crystals and I am glad to participate. For this project I chose the Rock Crystal.

• I like the rock crystal becouse I'm very positive, sincere and sociable person

• Rock crystal is the most powerful healing stone for all purposes.

• Title: Rock crystal, Quartz (Eng: Quartz)• Category: semiprecious stone, quartz • Formula: SiO2 (silicon dioxide)• Mohs scale of mineral hardness: 7• Specific gravity: 2.53 - 2.69 g / cm³• Melting temperature: 1670 ° C• Refractive index: 1552-1554

• Rock crystal is transparent, glassy shine. The color is from colorless to milky white. His sites around the world, Madagascar, Brazil, USA, Mexico, are the Alps, India, Australia, Russia, Czech Republic and Hungary. Rock crystal is one of the most common minerals on our planet. Is known as quartz, rocky quartz, quartz crystal, colorless quartz.