Modifiers matching oxide:

• metal,
• colloidal,
• covalent,
• inorganic,
• base,
• nonmetal,
• organic,
• soluble,
• polycrystalline,
• anodic,
• metallic,
• volatile,
• powdered,
• acid,
• refractory,
• dense,
• amorphous,
• ceramic,
• heavy,
• trivalent,
• crystalline,
• catalytic,
• rare,
• precious,
• secondary,
• basic,
• powdery,
• pure,
• stable,
• important,
• inexpensive,
• simple,
• silver,
• mixed,
• hard,
• semiconducting,
• reactive,
• toxic,
• inert,
• protective,
• heterogeneous,
• elemental,
• diamagnetic,
• related,
• iron,
• complex,
• solid,
• common,
• binary,
• insoluble,
• polyvalent,
• transparent,
• synthetic,
• acidic,
• conductive,
• active,
• single,
• gaseous,
• molten,
• opaque,
• nonconducting,
• nonmagnetic,
• exotic,
• alkaline,
• ionic,
• porous,
• particulate,
• raw,
• coloured,
• polymeric,
• miscellaneous,

Simple categories matching precious:

• pendant,
• artefact,
• stone,
• metal,
• skin,
• animal,
• beads,
• gem,
• drug,
• values,
• tradition,
• material,
• mixture,
• gemstone,
• fuel,
• rock,
• weapon,
• balsam,
• memory,
• item,
• resin,
• jewel,
• spice,
• keepsake,
• friend,
• fish,
• article,
• hardwood,
• photograph,
• wood,
• seasoning,
• object,
• mineral,
• fabric,
• fiber,
• pigment,
• nonmetal,
• thing,
• salt,
• clay,
• stuff,
• food,
• cereal,
• quality,
• deposit,
• works,
• herb,
• fauna,
• substrate,
• surface,
• tree,
• property,
• fibre,
• ornament,
• product,
• alloy,
• botanical,
• sample,
• relic,
• treasure,
• jewelry,
• catalyst,
• textile,
• liquid,
• commodity,
• scrap,
• artifact,
• price,
• container,
• necklace,
• liberty,
• display,
• coral,
• content,
• resource,
• oxide,
• emotion,
• ore,
• group,
• substance,
• document,
• trinket,
• ingredient,
• data,
• fluid,
• file,
• antiquity,
• matter,
• assets,