红宝石首饰的专业介绍
求助,请介绍下红宝石跟红宝石首饰~~~~
推荐回答(2个)
红宝石是指颜色呈红色、粉红色的刚玉,它是刚玉的一种,主要成分是氧化铝(Al2O3),红色来自铬(Cr)。自然没有铬的宝石是蓝色的蓝宝石。天然红宝石大多来自亚洲(缅甸、泰国和斯里兰卡)。天然红宝石非常少见珍贵,但是人造并非太难,所以工业用红宝石都是人造的。
红宝石的英文名称为Ruby,红宝石的矿物名称为刚玉,摩氏硬度为9。
红宝石的化学成分为三氧化二铝(Al2O3),因含微量元素铬而成红至紫红色。
(注:粉红色的刚玉不是叫做红宝石,而是叫做粉红色蓝宝石。)
摩氏硬度:
奥国矿物学家摩氏创立一种硬度表,作为评判矿物硬度的标准。最软者为滑石,最硬者为金刚石,共有十种矿物,定为十级。
其他 摩氏硬度表
滑石 1 石膏 2 指甲 2.5 方解石 3 铜币 3.5-4 萤石 4
磷灰石 5 小刀 5.5 玻璃 5.5 -6 长石 6 钢锉 6.5 石英 7
黄玉 8 刚玉 9 钨钢 9.1-9.5 金刚石 10
宝石分级标准
aaa:略
aa:略
a:尺寸准确,形状标准,光度够,板面均匀,没有铲边、歪尖、蒙、沙界、沙孔、漏光、黑底、厚边、失圆、不收尖、分板、拖板等缺陷。
b:够尺寸,光度够、形状好,允许有小歪尖、轻微沙孔及小许蒙。
c:有铲边、歪尖、蒙、沙界、沙孔、漏光、黑底、厚边、分板、拖板等缺陷。
d:铲边、歪尖、蒙、沙界、沙孔、漏光、黑底、厚边、分板、拖板等缺陷严重者以及形状不标准、不收尖者,也称为次石。
e:指大蒙、有气泡、杂质或裂、烂、崩等石以及d级最严重者,也称为废石。
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红宝石和蓝宝石都是刚玉的一种. 一般出售的红宝石都经过热处理. 最优质 的红宝石鸽血红天价. 小的红宝石并不贵. 人工合成红宝石很多卖的 要小心. 如果颗粒较大 颜色艳红 而且内部没什么裂隙 价格在几百到几千元 \估计都是合成的. 不知道你在问什么随便给你提个醒把
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