Preparation method of ruby with excellent permeability

The invention belongs to the field of artificial gems and particularly relates to a preparation method of a ruby with excellent permeability. The method specifically comprises the steps of mixing chromium oxide, iron oxide and aluminium oxide by a weight proposition of 0.5:0.1:99.4, after a mixture of the chromium oxide, the iron oxide and the aluminium oxide is compacted, placing the mixture into an arc discharge device, under the protection of inert gases, carrying out synthesis for 3 minutes with an electrical current of 150 amperes, and obtaining the bright red ruby of which the overall permeability is high. 本发明属于人工宝石领域，尤其涉及种通透性优异的红宝石的制备方法，其具体为：将三氧化二铬、氧化铁、三氧化二铝以0.5：0.1:99.4的重量比例进行混合，压坯后放入到电弧放电装置中，在惰性气体的保护下以150A的电流进行合成3min，得到颜色为鲜红色，宝石整体通透性高的红宝石。