admin 和田青玉是和田玉的四大类别之一，分布在中国新疆境内的昆仑山脉，在和田玉中数量最多。
在和田玉中硬度最高。和田青玉玉质细腻温润、玉色深重且纯正一致，整体呈现刚劲之气，寓意着基业长青。
青玉是和田玉四大类别之一，主要分布在新疆塔里木盆地之南的昆仑山脉，是和田玉中数量最大的组成部分，其物质成分跟白玉相近，其中，有一部分细腻的青玉韧性也更好。青玉由淡青色到深青色，颜色的种类很多，古籍记载有蚺子青、鼻涕青、蟹壳青、叶青等等。现代以颜色深浅不同，也有淡青、深青、碧青、灰青、深灰青等等之分。和阗玉中青玉最多，常见大块者。近年，见有一种翠青玉，呈淡绿色。和田青玉是和田玉中数量最大的组成部分，其物质成分跟白玉相同或相近，成因与白玉一样，都属于接触变质成因形成，只因含微量元素铁而呈现出差异。
四兽玉印章
四大神兽是现代人对青龙、白虎、朱雀、玄武的叫法，实际并非神兽，而是神明，在古代又叫作四象、天之四灵，属于远古星宿崇拜的产物。四兽融入了五行和方位，以不同颜色代表：东方青色为木，西方白色为金，南方赤色为火，北方黑色为水，中央黄色为土。另有《淮南子》提到五龙之一的黄龙，也即应龙位居中央，乃四兽之长。
所谓天数者，左青龙，右白虎，前朱雀，后玄武。是故处于堂上之阴而知日月之次序，见瓶中之冰而知天下之寒暑。
中国古代把天空里的恒星划分成为“三垣”和“四象”七大星区。所谓的“垣”就是“城墙”的意思。 三垣环绕着北极星呈三角状排列。在“三垣”外围分布着“四象”：“东苍龙、西白虎、南朱雀、北玄武”。
也就是说，东方的星象如一条龙，西方的星象如一只虎，南方的星象如一只大鸟，北方的星象如龟和蛇。由于地球围绕太阳公转，天空的星相也随着季节转换。每到冬春之交的傍晚，苍龙显现；春夏之交，朱雀升起；夏秋之交，白虎露头；秋冬之交，玄武上升，总称为“四大神兽”。
沁色是指玉器在环境中长期与水、土壤以及其他物质相接触，自然产生的水或矿物质风化侵蚀玉体，铁、锰等氧化物缓慢地侵入玉器使其部分或整体的颜色发生变化的自然现象。色质是玉的自然属性，色即沁色，质指玉质，而沁色通常会成为一块古玉的重要鉴定标准。
可见此玉印章沁色丰富，为经典的铁元素沁色，深入玉石内部，无法清晰，是古玉的经典特征，印章章面篆体精美，极具艺术价值，以四兽为主题，透雕而成，工艺超绝，历经漫长岁月，品相依旧完美，存世极为罕见，极具收藏价值。
英文翻译：Hetian jade is one of the four categories of Hetian jade, distributed in the Kunlun Mountains in Xinjiang, China, is the largest number of a class of hetian jade. The highest hardness in Hetian jade.
Hetian jade jade quality is delicate and warm, jade deep and pure consistent, the whole show strong gas, meaning the foundation of evergreen.
Jade is one of the four categories of hetian jade, mainly distributed in the Southern Kunlun mountains of The Tarim Basin in Xinjiang, hetian jade is the largest component of its material composition and white jade similar, among them, a part of the delicate jade toughness is also better. Green jade from light green to dark green, many kinds of color, ancient books recorded anaconda son green, nose green, crab shell green, green and so on. Contemporary with color depth is different, also have danqing, deep green, blue green, gray green, deep gray green and so on. And tian jade in jade, common block. In recent years, there is a kind of emerald jade, light green. Hetian jade is the largest part of hetian jade, its material composition is the same or similar to white jade, the cause of formation and white jade, all belong to contact metamorphism, because of the trace element iron and present a difference.
Four animal jade seals
The four great gods are modern people's names for green dragon, white tiger, rosefinch and Xuanwu. Actually, they are not gods, but gods. In ancient times, they are also called four elephants and four spirits of heaven, which are products of ancient star worship. The four beasts integrate the five elements and directions, represented by different colors: blue in the east for wood, white in the west for gold, red in the south for fire, black in the north for water, and yellow in the center for earth. Huanglong, one of the five dragons, is mentioned in Huainan Zi, which means the dragon is in the center and the longest of the four beasts.
The so-called number of days, left qinglong, right white tiger, rosefinch, after xuanwu. The order of the sun and the moon is known from the shade above the hall, and the cold and heat of the world are known from the ice in a bottle.
In ancient China, the stars in the sky were divided into seven star regions: "Three walls" and "four images". The so-called "yuan" means "city wall". Sanigaki is arranged in a triangular shape around Polaris. In the "three yuan" outside the distribution of "four elephants" : "east canglong, west White tiger, south Rosefinch, north Xuanwu".
That is to say, the eastern stars are like a dragon, the western stars are like a tiger, the southern stars are like a big bird, and the northern stars are like a turtle and a snake. As the Earth moves around the sun, the stars in the sky change with the seasons. Every evening at the turn of winter and spring, the dragon appears; At the turn of spring and summer, rosefinch rises; The turn of summer and autumn, white tiger outcrop; At the turn of autumn and winter, xuanwu rises and is called the "four great gods".
Ooze color refers to the natural phenomenon that the jade ware is in contact with water, soil and other substances for a long time in the environment, and the naturally generated water or mineral weathering erodes the jade body, while iron, manganese and other oxides slowly invade the jade ware and change part or the whole color. Color quality is the natural attribute of jade, color is qin color, quality refers to jade quality, and qin color will usually become an important appraisal standard of an ancient jade.
Visible the jade seal of ooze color is rich, is the classic iron ooze color, deep inside jade, not clear, is a classic characteristics of ancient jade, exquisite chapter seal surface design, the artistic value extremely, with four beasts for the theme, valuable.such handiwork, majestic, after long years, appearance is still perfect, there are rare, extremely collection value.