Funny enough, I've got 5 of these crystals between Archeology (125) & Treasure Hunting (202). Though my Artifice is only 80 or so, so I haven't needed them yet, I just banked them. I assume these are for high level item crafting? On an unrelated side note; which craft skill is best for making implants? I've heard that both Cybertech & Biotech have them.