"pietra dura" meaning in English

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  "etymology_text": "Italian, literally \"hard stone\".",
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      "expansion": "pietra dura (uncountable)",
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  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "text": "A Florentine mosaic is a familiar instance of work in pietra dura, though the ground may be soft marble.",
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        "A decorative art, the inlay technique of using cut and fitted, highly polished colored stones to create images."
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        "(art) A decorative art, the inlay technique of using cut and fitted, highly polished colored stones to create images."
      ],
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        "uncountable"
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      "topics": [
        "art",
        "arts"
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  "word": "pietra dura"
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  "lang_code": "en",
  "pos": "noun",
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      "examples": [
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      ],
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        "(art) A decorative art, the inlay technique of using cut and fitted, highly polished colored stones to create images."
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