Crystals are essentially mineral USB drives. They collect energy and can be charged to hold a certain vibration, emotion or desire. It is always a good idea to cleanse your stones when you first buy or get them from other people, consider it a "restart" ritual.
There are several method that can be used to cleanse and clear negative energy from crystals and stones, here are some basics to get you started!
Sea Salt - This is the most common method of cleansing and clearing. You can do this process with water or without. Be sure to research your stones, so you know which ones can be soaked in water and which ones cannot. If you are using water I would recommend a tbs to every cup in the container and allow the stones to soak for 24 hours. If you are going the dry route place sea salt into a glass dish and place your stones on top making sure that any points on your crystals are submerged to release their power back into the earth. Be sure you are using natural sea salt and not table salt.
Moon Cycle - This is my favorite method of clearing and charging my stones. I like to clear my stones on the New Moon by placing them outside in a tray or in my windowsill over night. When I am ready to charge my crystals I place them out in the Full Moon and bring them in the next morning. Don't forget about your crystal babies the next day because the sun can drain their energy. If you time your cleansing with the New and Full Moons you will fall into a nice cycle of tending to your rocks every two weeks.
Mother Earth - Crystals can be buried and left to charge for 24 hours or more. Since stones come from the earth they truly enjoy getting to return home if only for a little while. Make sure to mark the spot where they are buried so they are easy to find when your ready to use them. If you are in an apartment or don't have access to a yard you can fill a container with earth and submerge the crystals while keeping the container indoors.
Smudging - You can use Sage, Sweet Grass or incense to cleanse your crystals. I suggest smudging over your crystals in a tray or passing them through the smoke by hand. This is a Native American technique used for clearing the home space, sacred sites and crystals.
Citrine - The stone that never needs cleansing! This crystal can be coupled with other stones to keep their energies cleansed for a longer period of time. You could also get a bowls worth of Citrine and have a charging station! Great stone to use during meditations and visualizations!
If you have any other questions you would like me to cover feel free to leave suggestions in the comments!
XOXO Chelsea S