Ok this stone is a combination of amethyst and citrine. and you should look at these two stones for additional use for it. and like citrine there is natural and manmade ametrine. artificial ametrine is sometimes made of just glass. you can tell if you see bubbles in it. heat treated amethyst will have sharp edges where the yellow and purple meet. natural ametrine with have a blurred border.

usually this stone corrosponds to the 7th and 3th chakras and can use in meditation with the 6th chakra.
or in general to help mediations as some poeple said it helped them break through any barriers. also some people found it to be a happy stone for them. also some claim to have a jolt of energy hit them besides the effects below in treating cysts and adhesions like a reiki session.Connection of spirit to will, dispels negativity aides decision making, meditation and relieves stress. it removes negativity. Excellent for astral travel. Increases magical powers greatly. Helps to access "higher knowledge". Balances energies (male/female and more) and can create a path toward the "ultimate state of perfection.

in crystal healings ametrine is a highly recommended stone in treating cysts and adhesions. it gives off little jolts of energy that breaks them down and causes them to sort of dissolve. A large piece will cause a tingling or itchy tickling sensation inside the body right at the location of the cyst. Usually 30 mins. is about all most people can tolerate the sensation and is the recommended maximum time to employ it.