Chalcedony is a microcrystalline Quartz, and is found in many different colours and patterns. Chalcedony has a number of crystals grouped under it, many of which will be very familiar, including Agate, Carnelian, Chrysoprase, Aventurine, Bloodstone, Jasper and Onyx.

Alternative Names Sard, Mtorolite
Colour White, Blue, Green, Red, Yellow, Orange, Brown, Black
Hardness  7 
Crystal system Trigonal
Streak White
Lustre Dull
Main Locations Worldwide
Chakra Crown, Third Eye, Throat, Heart, Solar Plexus, Sacral, Root
Zodiac Cancer, Sagittarius
Numerology 9
Planetary Jupiter
Element Water