Diamond and emerald are made of

(1) Carbon

(2) Silica

(3) Silica and beryllium

(4) Carbon and beryllium

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Diamond and emerald are made of (1) Carbon (2) Silica (3) Silica and beryllium (4) Carbo..

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( 4 ) Carbon and beryllium

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Diamond and emerald are made of (1) Carbon (2) Silica (3) Silica and beryllium (4) Carbo..

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Carbon and beryllium

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