Quartz -

Quartz

Birthstone - April (Rock Crystal Quartz)

Mohs scale of hardness - 6 - 7

Colour - One of the most abundant minerals, there are many different varieties some of which are semi-precious gemstones.  It can, therefore, display many colours, patterns and optical effects

Cut - as cabochons, faceted gemstones, beads, carvings

Found - Worldwide, crystals can exceed 2 tonnes!

Care Tip - Can be damaged by high heat