Niello (English spelling)

Japanese: ニエロ（英語表記）niello

An arts term. (1) Black gold. A black alloy made by mixing silver, copper, and lead in a 3:2:1 ratio and adding a large amount of sulfur to the mixture to make a melted black alloy. (2) A technique for inlaying black gold, an old metalworking technique that began around the 15th century BCE in ancient Egypt and the Mycenaean civilization. Black gold is powdered, and the engraved patterns on metal vessels are coated with borax, which is then filled in and heated, baked, and polished to a finish. The black stands out against the silver and gold background, creating an aesthetic effect. Many examples remain in silverware from Rome, Sassanid Persia, and the Italian Renaissance.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

工芸用語。 (1) 黒金のこと。銀，銅，鉛を3:2:1の割合で混合し，多量の硫黄を加え溶解して得る黒色の合金。 (2) 黒金を象眼する技法で，前 15世紀頃の古代エジプトやミケーネ文明の頃に始る古い金工術。黒金を粉末にして，金属器に彫り込んだ模様の部分にホウ砂を塗り，充填して加熱，焼付け，研磨仕上げを行う。地色の銀，金色に黒が映えて美的効果を生む。ローマ，ササン朝ペルシア，イタリア・ルネサンスの銀器に遺例が多い。

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