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ring
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brooch
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jewelry
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diamond
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emerald
sapphire
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alexandrite
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opal
demantoid garnet
tanzanite
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coral
tourmaline
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brand
brand
overseas brands
overseas brands
cartier
tiffany
bulgari
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graph
harry winston
Boucheron
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chanel
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mikimoto
Tazaki
star jewelry
Ponte Vecchio
Kashikei
SUWA
Heiwado
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4℃
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俄
GSTV
Jewelry by Japanese Artists
Jewelry by Japanese Artists
Nobuko Ishikawa
Koji Iwakura
Mitsuo Kaji
Tomoko Kodera
Sachi Fukuhara
Avery
Masumi Kasahara
Kunio Nakajima
Mizuno Kaoruko
Tomonori Kiyota
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hermes
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gucci
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Ruth
diamond loose
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Ginza store
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October 1, 2025
【ダイヤモンド】カラット（重さ）について
GIAさんより共有いただきました、ダイヤモンドの重さ≒サイズの基準となるカラットのチャート表となります。
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エメラルドとグリーンベリルの違いとは？ 発色原因・鑑別基準・価値差を宝石学の視点で徹底解説
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