Over on my website, http://www.marendunnstudio.com, I have a lot of spiritual healing jewelry. I have many quartz necklaces: tangerine quartz, spirit quartz, lithium quartz, all of which have great energy. They are also excellent chakra stones, depending on the color of the stone. You can meditate with my jewelry on the correct chakra, or use it in journeying.
Please feel free to email me with questions. I am happy to share any knowledge and experience I have with you.