A Little Bit on Chakra Crystals

Chakra crystals are a selection of crystals that most resonate with each chakra... This is down to the colour of the crystals, and also their healing properties. When working with the chakras, you would generally go with the crystal that fits the chakra by colour, but you can also use another crystal for its properties even if the colour doesn't match, usually when the chakras are out of balance.

A good example of this would be using a yellow crystal such as Citrine or Calcite which would normally be used with the Solar Plexus, on the heart chakra as this would help heal emotional wounds that affected the heart. The same works in reverse.

You could also use white or clear crystals from the Crown Chakra to work on any other chakra to aid with healing from the higher self, or to help attune each chakra with Clairvoyance.
As a quick guide, here is a list of the seven main chakras and their colours and appropriate crystals:

Chakra	Colour	Crystal
Crown	White/Clear	Clear Quartz, Slenite, Moonstone
Third Eye	Purple	Amethyst, Sugilite
Throat	Blue	Howlite, Blue Lace Agate, Celestite
Heart	Green	Bloodstone, Aventurine, Jade, Malachite
Solar Plexus	Yellow	Citrine, Calcite,
Sacral	Orange	Amber, Sunstone, Carnelian
Base	Red	Jasper, Garnet, Hematite

Again, you may feel drawn to a  specific crystal, in which case that is the one to use.