Thank you for your inquiry. To clean a Lemurian or any other crystal, I would I would put them out in sunlight and moonlight for the cleansing and recharging. An alternate to sunlight and moonlight would be to put them on a copper plate or under a copper pyramid to charge. You can also let the Lemurian soak in water with some sea salt (regular salt would do). Or they can be put around a salt lamp for a week to be cleaned. Another method is to use sage to clear them.
To activate the crystal once it has been cleaned, you can hold it in your hands. While holding it imagine white light coming through your hands. You can then place it on the third eye and imagine the power of intention enveloping the crystal. Or you can hold it to your heart chakra and imagine the intention flowing from there. I would hold the crystal on either chakra for a couple of minutes. When you are done, I would drink some water and wash your hands if you are going to activate any more crystals. You wash your hands to release any energy stored up from the previous crystal.
I hope that these recommendations can be of assistance and that crystals grace your journey with love and light.
Join us on Facebook - www.facebook.com/crystaltalk
Disclaimer – Crystals are not a medical treatment and should not be used as a replacement for medical care. Please consult your healthcare specialist for your particular needs.