From Wikipedia, the free encyclopedia. Citrine /ËsÉªtriËn/ is a colour, the most common reference for which is certain coloured varieties of quartz which are a medium deep shade of golden yellow.Citrine has been summarized at various times as yellow, greenish-yellow, brownish yellow or orange.rom Wikipedia, the free encyclopedia. Citrine /ËsÉªtriËn/ is a colour, the most common reference for which is certain coloured varieties of quartz which are a medium deep shade of golden yellow.
indium oxide. thallium oxide. Aluminum Oxide is a chemical compound consisting of two aluminum ions and three oxygen ions demonstrated by the formula Al 2 O 3 Another commons name for aluminum oxide is aluminium oxide which is its proper name.It may also be referred to as aloxide, aloxite, or alundum.ndium oxide. thallium oxide. Aluminum Oxide is a chemical compound consisting of two aluminum ions and three oxygen ions demonstrated by the formula Al 2 O 3 Another commons name for aluminum oxide is aluminium oxide which is its proper name.
Al 2 O 3 is significant in its use to produce aluminium metal, as an abrasive owing to its hardness, and as a refractory material owing to its high melting point.luminium oxide is an amphoteric substance, meaning it can react with both acids and bases, such as hydrofluoric acid and sodium hydroxide, acting as an acid with a base and a base with an acid, neutralising the other and producing a salt.