Sweet.I would make psychokinesis its own special force-affecting theme.
Make obsidian unaligned, an amoral force of nature, rather than evil.
So, something like:
• Amethyst (body affecting, psychometabolism, shapeshifting, healing)
• Emerald (mind affecting, telepathy, phantasm, charm, frighten)
• Sapphire (force affecting, psychokinesis, fly, force constructs)
• Topaz (space affecting, psychoportation, outofbody projection, teleportation, conjuration, planar travel)
• Crystal (prescience, clairsentience, knowledge, foretelling, luck)
• Ruby? (elementalism, earth-fire forging, air-water weather, ether)
• Obsidian ... (antimagic negation?) or (any theme?) or (elementalism?)
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