Modifiers matching rock:

• sedimentary,
• impermeable,
• visible,
• indigenous,
• hard,
• igneous,
• dated,
• reactive,
• coloured,
• polyphase,
• volcanic,
• metamorphic,
• heavy,
• inert,
• suitable,
• crystalline,
• crustal,
• molten,
• clastic,
• opaque,
• lightweight,
• original,
• resistant,
• light,
• native,
• conductive,
• sharp,
• magnetic,
• porous,
• unstable,
• free,
• soft,
• smooth,
• common,
• ductile,
• uniform,
• frozen,
• chemical,
• fragile,
• tight,
• size,
• sticky,
• textured,
• dense,
• fragmented,
• extraterrestrial,
• reflective,
• granular,
• stable,
• softer,
• white,
• fine,
• modern,
• lighter,
• nonporous,
• older,
• terrestrial,
• argillaceous,
• calcareous,
• non-porous,
• decorative,
• virgin,
• egyptian,
• marine,
• heterogeneous,
• impervious,
• barren,
• industrial,
• alkaline,
• consolidated,
• planetary,
• massive,
• natural,
• deleterious,
• bituminous,
• combustible,
• weak,
• british,
• impenetrable,
• exotic,
• difficult,
• aluminous,
• friable,
• dark,
• insoluble,
• polycrystalline,
• intermediate,
• brittle,
• normal,
• pulverized,
• refractive,
• angular,
• smaller,
• carbonaceous,
• precious,
• flat,
• firm,
• elastic,
• crushed,
• simple,
• plutonic,
• red,
• salt,
• weaker,
• durable,
• primary,
• permeable,
• anisotropic,
• covered,
• related,
• ornamental,
• eruptive,
• spherical,
• useful,
• abundant,
• isolated,
• rough,
• competent,
• small,
• hot,
• ordinary,
• geologic,
• heated,
• sedentary,
• ingenious,
• abrasive,
• inappropriate,
• flinty,
• intrusive,
• typical,
• compact,
• siliceous,
• new,
• glassy,
• stronger,
• powdered,
• flying,
• unconsolidated,
• polished,
• korean,
• soluble,
• crumbly,
• acidic,
• underlying,
• homogeneous,
• rigid,
• harder,
• vitreous,
• tough,
• rich,
• coarse,
• surrounding,
• hardest,
• available,
• enough,
• widespread,
• noble,
• solid,
• colorful,
• base,
• unusual,
• looking,
• loose,
• refractory,
• organic,
• heavier,
• geological,
• artificial,
• traditional,
• good,
• azonic,
• subsurface,
• acid,
• strong,
• basic,
• metallic,
• extrusive,
• dry,
• colored,
• russian,
• local,
• large,

Simple categories matching crystalline:

• rock,
• aragonite,
• salt,
• system,
• material,
• fiber,
• phase,
• substance,
• sorbent,
• element,
• formation,
• solid,
• constituent,
• polysaccharide,
• mineral,
• form,
• solute,
• segment,
• structure,
• alloy,
• drug,
• apatite,
• state,
• quartz,
• polymer,
• dielectric,
• order,
• fertilizer,
• powder,
• parameter,
• fm,
• substrate,
• sugar,
• dislocation,
• elastomer,
• filler,
• marble,
• lattice,
• deposit,
• shape,
• hydrate,
• si,
• weakness,
• ingredient,
• carbon,
• resin,
• carrier,
• tissue,
• particle,
• stone,
• fraction,
• surface,
• matter,
• carbohydrate,
• property,
• gemstone,
• boundary,
• nonmetal,
• ore,
• hair,
• defect,
• medium,
• semiconductor,
• aggregate,
• component,
• residue,
• compound,
• layer,
• particulate,
• thermoplastic,
• metal,
• character,
• fibre,
• gem,
• object,
• sweetener,
• oxide,
• article,
• imperfection,
• insulator,