materials
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Cast Iron
A strong and durable iron alloy, primarily composed of iron, carbon, and silicon, which is typically molded into shape and often used metaphorically to describe something unyielding or exceptionally tough.
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Fray at the edges
To show signs of deterioration, weariness, or an impending breakdown, either literally or figuratively.
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A diamond in the rough
A person or thing that has great potential or hidden qualities but is currently unrefined or undeveloped.
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White as alabaster
Extremely pale or pure white, often with a smooth or translucent quality, reminiscent of the fine-grained mineral alabaster.