You can cleanse your crystals in many ways, and smoke cleansing is one of the most popular because it is fairly simply to do and carries several elements including earth (from the herbs they are typically made from), fire (lighting the incense), and wind (the movement of the smoke).
I've created a video on my YouTube channel that demonstrates how I cleanse my crystals using incense cones.
Every Kelsey's Crystals order includes an incense and a QR code to the video to assist you and your new crystals on your journey.
Enjoy!