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Jyutping gwai3 bou2
Pinyin guī bǎo

Definitions (粵典–words.hk)
  1. 名詞
    珍​貴​嘅​珠​寶​、​寶物
    treasure; precious gem
  2. 名詞
    珍貴​難​得​嘅​事物​,​例如​人​或​文化
    precious and valuable people, things or culture that need to be conserved
    • 小朋友往往係家中嘅瑰寶,爸爸媽媽可以話係佢哋嘅婢女同侍從。
      小朋友往往系家中嘅瑰宝,爸爸妈妈可以话系佢哋嘅婢女同侍从。
      Kids are always the 'precious gem' in every family and their parents are just like their maids and attendants.

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Jyutping gwai1 bou2
Pinyin guī bǎo

Definitions (CC-CEDICT)
  1. gem
  2. (fig.) rare and valuable item
  3. treasure
Definitions (Wiktionary)
  1. noun
    treasure; rarity; gem (Classifier: 個/个)
    (syn.) 宝货, 寶貨, 寶物, 珍宝, 珍寶, 宝物
Definitions (HSK3.0)
  1. HSK3 七一九级词汇表 #1503
Examples (粵典–words.hk)
  1. Cantonese
    小朋友往往系家中嘅瑰宝,爸爸妈妈可以话系佢哋嘅婢女同侍从。
    小朋友往往係家中嘅瑰寶,爸爸媽媽可以話係佢哋嘅婢女同侍從。
    • Kids are always the 'precious gem' in every family and their parents are just like their maids and attendants.
Examples (Wiktionary)
  1. Mandarin
    瑰宝
    瑰寶
    guī bǎo
    • treasure