Amethyst is an extremely powerful and protective stone. Amethyst blocks negative environmental energies. It is believed that amethyst prevents the build up of toxicity and can alleviate drunkedness. It helps overcome addictions, reduce stress and balance mood swings.
 
This one in particular is chevron (dream) amethyst, this is one of the best crystals to stimulate the third eye.
 
Average measurements
Weight range from 114g to 189g