昌化鸡血石的鉴别 Identification of Changhua bloodstone quality

对于昌化鸡血石优劣高下的识别，主要是通过人的视觉、触觉。由于人的肉眼观察容易出现误差，这里谈几点简易识别鸡血石的方法和容易碰到的实际问题。
识别时环境条件要好 鸡血石的血色在不一样的光线下是有变化的；鸡血石的血色在紫外灯光下，容易变暗；在红外灯光下，容易变鲜；在各种彩灯下，都容易添上各种色彩，失去血色的本来面目。所以最好利用自然日光观察，自然光下色彩最真实。
多观察、多比较 鸡血石的血色是有区别的，必须从它的鲜度、浓度和质地的透明度、光质度来分析观察比较对照。昌化鸡血石有老坑、新坑之分。老坑的鸡血石从质地、血色来说要 比新坑的好。近来在市场上很少看到老坑的鸡血石，因此老坑鸡血石被收藏者视为珍宝。对缺少经验的人来说，孤立地看某一块石料，不易分清高下，所以进行不同 质地和不同色泽的比较是十分必要的。也就是说多看多比较，在实践中多积累经验。
利用简易的工具 通常使用的工具有放大镜、聚光手电筒和刻刀。放大镜是用来帮助观察和分析细小的矿物颗粒的状态；聚光手电筒可帮助你观察透明度、色泽和瑕疵等；刻刀用来测 试石质的硬度。昌化鸡血石的质地以冻地为佳。冻地鸡血石血色鲜艳，光泽亮丽，给人一中润泽的感觉。而刚地和硬地鸡血石就没有这种感觉，鸡血石血色可分为鲜 活血和死血。活血在灯光照射下有一种流动的感觉，血色生长在冻地石料上的血才称得上活血。

那么，怎样识别鸡血石原石和成品石的优劣呢？我们对原石可浸入水中冲洗，在局部可用水砂皮抛光观察，一部分原石可以刻划观察。但成品石通常不可以刻 划，即使要进行刻划观察，必须征得主人的同意，在不显眼的地方轻划，比如在印章底部、摆件的背部或下部。成品鸡血石因经过磨棱、抛光等，矿物颗粒难以观 察，因此更要认真、仔细，不可粗心大意。

For identification Bloodstone superiority or inferiority, mainly through human visual, tactile. Since the human visual observation prone to error, here to make a few simple and practical method to identify Bloodstone likely to encounter problems.
Identifying better environmental conditions Bloodstone is not the same color in the light there is a change; Bloodstone color in UV light, easy to darken; in infrared light, easy to become fresh; in a variety of lights are easily added a variety of colors, lose color it is. So the best use of natural daylight to observe, most realistic color under natural light.
Observe, compare Bloodstone Scarlet is a difference, it must be from the freshness, texture and transparency concentration of light to analyze the quality of observation and comparison controls. Bloodstone has old crater, new pit points. Old crater of soapstone from the texture, color is to be better than the new pit. Recently, the market rarely see the old pit of soapstone, soapstone old crater is therefore regarded as treasures by collectors. The lack of experience of the people who look at a piece of stone in isolation, is not easy to distinguish compete, so a comparison of different textures and different color is very necessary. That see more comparison, in practice, more experience.
Using a simple tool commonly used tools magnifying glass, flashlight and knife condenser. Magnifying glass is used to help observe and analyze the state of fine mineral particles; condensing flashlight can help you observe transparency, color and blemishes, etc; knife used to test the hardness of stone. Bloodstone texture to frozen ground better. Frozen ground soapstone color bright, shiny, in giving a moist feeling. And just to hard soapstone and no such feeling, Bloodstone Scarlet Blood Circulation and death can be divided into fresh blood. Promoting blood circulation in the light irradiation there is a feeling of flowing blood is grown on the frozen ground stone of blood can be called blood.
So, how to identify Bloodstone rough and polished stone and cons? We are the original stone submersible flushing locally available water sand paper polishing observation, part of the original carved stone can observe. But the finished carved stone is normally not draw, even if you want to characterize observed, must obtain the consent of the owner, in an inconspicuous place to scratching, such as the back or bottom of the lower portion of the seal, in ornaments. Bloodstone finished because after grinding edge, polishing, mineral particles are difficult to observe, so they should seriously and carefully, not be careless.