Yttrium Fluorite Rough 
Yttrium/Lavender: well-being, serenity, peace, connection with universe/God/eternal life force.
Important balancer, healer. Opens heart (especially green), Throat Brow, Crown Chakra for clarity, overview, seeing additional truths/realities. Spleen bones, teeth, lungs, detoxification, anxiety, insomnia. Benefits the teeth and bones. People with arthritis, rheumatism, or spinal injuries have reported some relief from their conditions when they employ Fluorite in their healing regimen. Helps to rekindle sexual appetite and heighten intuitive powers. It is suggested using Fluorite in conjunction with Calcite and Pyrite. Assists in fighting mental disorder and gaining spiritual awakening. Helps one become more aware of the higher levels of reality and can anchor and free one from over stimulation on the psychic plane. There is an amazing correlations between photos from the universe and stones we have in the earth itself. Amazing isn't it? These are from a site called Multi-Universe, check it out, click on the picture
Clusters: lowers work/life stress (helpful on your desk)