总结知识红宝石

古柏林终于官方解释鸽血红的标准了

官方权威的诠释，估计他们也是被问烦了。择要翻译了一下，供大家参考。
顺附上楼主在古柏林用功读书的照片哈~~

*** Gubelin's criteria for pigeon-blood red colour call on ruby:
Traders and privates aiming for the very best rubies are aware of the impact that the term 'pigeon-blood red' on their gem report can make. We are asked constantly about the criteria that Gubelin Gem Lab applies to rubies in order for the highly sought-after trade colour to be mentioned in a report. Here are the guidelines: first and most importantly, the hue of the stone must fit in the strictly defined range given by our master stones, ranging from pure red to red with a minute purplish modifier; further, pigeon-blood red candidates must possess a saturated colour and medium tone. Just a small number of untreated, natural rubies of good quality can qualify: only a few, small eye-visible fractures are allowed, they must be free of eye-visible opaque or dark inclusions, with high transparency, homogeneous colour and colour distribution, and with only minor windowing or extinction. Originally coined for the best rubies from Mogok, Burma, pigeon-blood red implies what the late Dr. Eduard Gubelin described as “…the gorgeous glowing colour of smoldering red fire beneath its shining, lacquer-like surface (…) the crown of all the beauty, the noblest and most precious nuance is pigeon blood red, a saturated shade of carmine red. The more glowing, the more vivid is the red sparkle, the choicer and more costly is the ruby.” Based on his reference to that inner glow, we test each ruby carefully for its medium to high fluorescence excited under a wavelength of 365nm. Gubelin Gem Lab does not apply any restrictions to the country of origin; however, so far we have not come across any rubies from outside Burma that fulfil all criteria.
In summary, the term pigeon-blood red as defined by Gubelin is much more than just a specific hue; it is a mark of distinction for which only a small number of rubies qualify.

古柏林关于鸽血红宝石的鉴定说明
这个问题被问了很多次，GUB忍不住发了邮件说明，择要如下：
1，原本是定义缅甸莫谷出产的最美的红宝石的。
2，色相（Hue）必须严格符合其比色石（这个我也没看过，打算跟他们申请看一下）的颜色，这是一个很小的范围，是纯红到带一点点紫色调的范围。并且，鸽血红的宝石必须是高饱和度和中等明暗的。
3，只有极少无烧的红宝石符合鸽血红的标准：只允许有极微小的裂缝，不可以有肉眼可见的不透明区域和暗色包裹体，必须有均匀的颜色，只允许有很小的窗口和颜色退变。
4，根据E.Gubelin博士的描述，这是一种类似于闷燃的火焰般的颜色（不明觉厉的可以参照烤羊肉串的木炭，别再想去缅甸杀鸽子了）。
5，与产地无关，只要达到标准就可以颁发鸽血红证书；但是迄今为止，还没遇到缅甸以外的红宝石符合这个标准。

古大大