ALEXANDRITE It is believed to bring balance in the interaction between the physical manifest world and the unmanifest spiritual, or astral world. Good luck. Good omens. Creativity. Imagination. Intuition. Sylvanus? wife goes mad and kills first-born son, from which Alexandrite results? So says Soippi. Electric (explosive barrel). Electric temp ess. Gonne slugs (with iron and alchemist fire). Potion of heal. Luckstones & Lodestones (Volo)! Possible Air + Fire Aspect. Explore this more.
AMETHYST Sonic (explosive barrel). Scarlet blue skleen (intelligence). Bleach. Ungol poison (mandrake & strychnine). Ioun stone wisdom, and communication, or sight (Volo). Calm, Peace, Sensitivity. Elemental prism. Unclear. Try to improve these. Find other uses. Possible Water + Air aspect.
AVENTURINE "Love Stone"? Dispels illusions and false transformations. Rashemi use it with spirits? So vaguely Divinatory? Divine temp esse. Mojo. Creativity, Empathy. Probable Earth (divination), or Air (illusion) aspect. Warrants experimentation.
BELJURIL Sea-green color. Absorbs small amounts of energy (heat, light, vibration), and periodically disperses this energy. Great energy conductor, and storer (Volo). Warrants experimentation. Color and effect suggests Water Aspect (Abjurative; controlling energy flow).
DIAMOND Cold (why?) essence. Golem heart (plus gold). Divinatory, spell-ink, medicine/poison dichotomy, dream-ward, enchantment-ward (Volo). Guidance, Strength, Divinity. One of three for ley-lense. There are surely better uses. The cold aspect is a poor fit (just use Phenelope). Golem-Heart, Ley-Lense, and Medicine-Poison qualities are all suggestive of a balanced aspect.
EMERALD Acid essence. Fertility, health, growth, churning, revealing (Volo). Quality. Find more uses.
FIRE AGATE Positive essence (?). Dusty rose skleen (auric shield). Fire resistance with magic blood (Volo). Draconic prism. Possible Fire Aspect. Explore this more.
FIRE OPAL Fire essence. Pink skleen (constitution). Elemental rime poison (toadstool & strychnine). Fire, Brilliance, Control (Volo). Fertility. Desire. All prisms. An aspect of Earth + Fire. Warrants experimentation.
FLUORSPAR Fire (explosive barrel). Fire essence temp. Pale blue skleen (strength). Alchemist fire. Preserved blood? Visible aura when near invisibility (Volo). All prisms. Quality.
GARNET Negative essence. Deep Red skleen. "Hardened blood of divine avatars able to increase weapon effectiveness (Volo)." Survival. Activation. Fertility. Blood. Canopic Prism. Quality. Archetypal Feminine.
GREENSTONE Spell component (plus glass). Preserved blood? Ioun stone creation, supposedly, but not seen. Useful in abjurative mental wards (Volo). Incoherent. Find more uses.
MALACHITE Acid (explosive barrel). Spell components. Acid essence temp. Acid flask. Potion freedom. All manner of elemental spells (Volo). Dissolution of negative energy. Recovery. Flow. Quality.
OBSIDIAN Potion of warding. Can make ioun stones (Volo & Actually Does). High quality can confer some immunity to Prismatic spells (Volo). Revelation. Mystery. Unconscious. Find more uses. Warrants experimentation.
PHENALOPE Absorbs heat. Good fermentation (keeping dry & cold). Cold (explosive barrel). Cold essence temp. Preserved blood? Mojo. Purity. Heart. Heartburn. Quality.
ROGUE STONE Increases likelihood of wild magic in proximity (Volo). So luck/fate oriented? Find more uses. Warrants Experimentation.
RUBY Divine essence. Fiery Divinity? Spirit. Will. Radiance. Positive leaning? Blood. Strength. Fire. Power. Lens. Ritual circles. Unclear. Probable Fire + Air Aspect. Warrants Experimentation. Find more uses.
SAPPHIRE Electric essence. Blue Skleen (wisdom). Thunderstone. Associated with Air, and Mind (Volo). Intuition. Focus. Axiomatic prism. Unclear. Probable Air+Water Aspect. Warrants Experimentation. Find more uses.
SAPPHIRE, STAR Magic immunity (Volo). Normal sapphire, but enhanced / extreme. Warrants experimentation. Find more uses.
TOPAZ Magic damage (explosive barrel). Sonic essence. Pink-green skleen (charisma). Digestion. Efficiency. Communication. Probable Aspect of Air. Explore this more.