Modifiers matching crystal:

• optic,
• single,
• monatomic,
• natural,
• individual,
• synthetic,
• inorganic,
• flat,
• clear,
• valuable,
• larger,
• transparent,
• optical,
• dark,
• disordered,
• cubic,
• red,
• beautiful,
• nonlinear,
• raw,
• polished,
• anisotropic,
• healing,
• perfect,
• hard,
• irish,
• birefringent,
• piezoelectric,
• ionic,
• common,
• elemental,
• elongated,
• industrial,
• colorful,
• atomic,
• important,
• metallic,
• yellow,
• strong,
• rare,
• small,
• molecular,
• large,
• colloidal,
• electric,
• bound,
• colored,
• fat,
• durable,
• blue,
• simple,
• typical,
• electronic,
• solid,
• new,
• suitable,
• basic,
• full,
• familiar,
• everyday,
• covalent,
• harder,
• abrasive,
• mysterious,
• brittle,
• thick,
• artificial,
• pure,
• symmetric,
• regular,
• refractive,
• set,
• model,

Simple categories matching brittle:

• coating,
• tree,
• material,
• wood,
• mineral,
• covering,
• body,
• structure,
• substrate,
• rock,
• system,
• binder,
• element,
• solid,
• fiber,
• metal,
• waste,
• composite,
• plastic,
• cookie,
• resin,
• particle,
• aggregate,
• plate,
• component,
• object,
• adhesive,
• semiconductor,
• food,
• constituent,
• surface,
• stone,
• nature,
• foam,
• substance,
• unit,
• wafer,
• article,
• sheet,
• fibre,
• crystal,
• film,
• powder,
• polymer,
• deposit,
• tool,
• filler,
• medium,