Powerpoint presentation about crystals

1. ROCK CRYSTAL
Staša Banjanin
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2. Rock crystal
• 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

3. Rock crystal
• Rock crystal is the most powerful healing stone for all purposes. It is
suitable to treat the wounds of a traumatic childhood and raising self-
esteem. This crystal will not allow you to grieve in self-pity over what
you can not change. Increases energy. Rock crystal enhances the
energy of all the other stones. That's not all. This special crystal has
the capability of accepting the energy of other crystals and so can
replace all other stones.

4. Rock crystal
• 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.