隕石(meteorite)也稱"隕星"，是地球以外脫離原有運行軌道的宇宙流星或塵碎塊飛快散落到地球或其它行星表面的未燃盡的石質、鐵質或是石鐵混合的物質。因為隕石是外太空的來物，隕石確定真假是需要儀器鑒定的，肉眼只有輔助的作用。大多數隕石來自于火星和木星間的小行星帶，小部分來自月球和火星。隕石大體可分為石質隕石、鐵質隕石，石鐵混合隕石。隕石的平均密度在3~3.5之間，主要成分是硅酸鹽。隕鐵密度為 7.5~8.0，主要由鐵、鎳組成。隕鐵石成分介于兩者之間，密度在5.5~6.0間。
Meteorite, also known as "meteorite", is an unburned stone, iron or a mixture of stone and iron, which is scattered on the surface of the earth or other planets by cosmic meteors or dust fragments that deviate from the original orbit outside the earth. Because meteorites are objects from outer space, it is necessary to identify whether meteorites are true or false by instruments, and the naked eye has only an auxiliary role. Most meteorites come from the asteroid belt between Mars and Jupiter, and a few come from the moon and Mars. Meteorites can be roughly divided into stone meteorites, iron meteorites and stone-iron mixed meteorites. The average density of meteorites is between 3 and 3.5, and the main component is silicate. The density of meteorite iron is 7.5~8.0, which is mainly composed of iron and nickel. The composition of stony iron is between them, and the density is between 5.5 and 6.0.
千百年來，瑪瑙隕石作為奇珍異寶，始終受到收藏家們孜孜不倦地追求,甚至被人們誠摯地譽為“礦物之王”、“寶石之王”。而且，瑪瑙隕石還有一個非常好聽的名字“朗斯代爾”，指瑪瑙隕石是宇宙空間的流星墜落地球燃燒消融后所形成的。瑪瑙隕石含有黃豆顆粒大小不等的碳、鎂、鋅、等多種元素。這些元素使得瑪瑙隕石在黑夜里顯得更加通體透亮，精致靚麗。”據記者網上調查，這類型的瑪瑙隕石于200年前，美國的地質學家朗斯代爾曾發現過一顆，現存于美國國家自然博物館。瑪瑙隕石為自然博物館的歷史研究提供了重要的科學依據。它作為一種獨特的歷史瑰寶，價值已經遠超過瑪瑙本身。
For thousands of years, agate meteorite, as a rare treasure, has always been pursued tirelessly by collectors, and has even been sincerely praised as "the king of minerals" and "the king of precious stones". Moreover, agate meteorite also has a very nice name "lonsdale", which means that agate meteorite is formed after meteors in space fall into the earth and burn and melt. Agate meteorite contains many elements such as carbon, magnesium, zinc and so on. These elements make agate meteorites appear more transparent, delicate and beautiful in the dark. According to the reporter's online survey, this type of agate meteorite was discovered 200 years ago by American geologist lonsdale, and now exists in the National Museum of Natural History. Agate meteorite provides an important scientific basis for the historical research of natural museum. As a unique historical treasure, its value has far exceeded agate itself.
瑪瑙隕石具備隕石的二大特征：其一，隕石的形態。隕石多具有不規則形態，幾乎任何形態的隕石都是可能的。隕石發生第一次爆炸后隕落過程中與氣流劇烈摩擦，產生高溫、高熱導致隕石外部元素熔融。所以，高空爆炸隕石的邊緣多是圓滑的。而低空爆炸或隕石在隕落過程中發生碰撞導致的次爆炸，讓這類隕石邊緣較高空爆炸隕石邊緣要銳利許多，甚至形成邊角齊整，刃面鋒利的狀態。該瑪瑙隕石邊緣圓滑，光潤，特此判斷是應為高空爆炸所產生的瑪瑙隕石。
Agate meteorite has three characteristics of meteorite: first, the shape of meteorite. Most meteorites have irregular shapes, and almost any shape of meteorites is possible. After the first explosion, the meteorite collided violently with the airflow during the falling process, resulting in high temperature and high heat, which led to the melting of the external elements of the meteorite. Therefore, the edges of meteorites exploded at high altitude are mostly smooth. However, the secondary explosion caused by low-altitude explosion or meteorite collision in the process of falling makes the edge of this kind of meteorite much sharper than that of high-altitude explosion, and even forms a state of neat corners and sharp blade surface. The edge of agate meteorite is smooth and smooth, so it is judged as agate meteorite produced by high-altitude explosion.
其二，隕石的熔殼。我們可以從熔殼的有無，熔殼的厚度，熔流的方向來判斷。高空爆炸隕石的熔殼厚度多在1毫米左右，局部甚至超過2-3毫米。有足夠的距離讓隕石在隕落過程中燃燒，隕石的熔殼就鮮明典型。隕石隕落過程中有暴雨出現的，熔殼的龜裂紋要突出一些，日久則導致熔殼脫落問題。而隕石落點環境好壞也是隕石熔殼能否保存好的重要條件。個別低空爆炸的隕石甚至來不及燃燒就隕落地面，也就沒有熔殼出現，而這樣的隕石價值就要遠遠低于有熔殼的隕石。該瑪瑙隕石表面有黑色的熔殼，且厚度多在1毫米左右，熔流的方向即龜裂紋特征十分明顯，肉眼均可看到。且沒有脫落，保存相當完好，實屬難得。故具備瑪瑙隕石的第二特征。
Second, the melting shell of meteorites. We can judge from the presence or absence of molten shell, the thickness of molten shell and the direction of molten flow. The melting shell thickness of meteorites exploded at high altitude is about 1 mm, and even more than 2-3 mm locally. When there is enough distance for meteorites to burn in the process of falling, the melting shells of meteorites are typical. In the process of meteorite falling, there is heavy rain, and the turtle crack of the molten shell should be more prominent, which will lead to the problem of molten shell falling off over time. The impact environment of meteorites is also an important condition for the preservation of meteorite shells. Individual meteorites exploding at low altitude fall to the ground without burning, so there is no melting shell, and the value of such meteorites is much lower than that of meteorites with melting shells. The agate meteorite has a black melting shell on its surface, and its thickness is about 1 mm. The melt flow direction, i.e., turtle crack characteristics, is very obvious and can be seen by naked eyes. And it has not fallen off, and it is quite well preserved, which is really rare. Therefore, it has the second characteristic of agate meteorite.
此件來自月球的瑪瑙隕石晶瑩剔透璀璨奪目和堅硬無比的寶石品種，礦物之王、寶石之王。瑪瑙隕石可以說是奇珍異寶隕石夜明珠。隕石是從星際空間穿過大氣層燒蝕后達到地表的流星體殘核。且具明顯的療效作用。識貨之人盡快與我聯系吧！如果你拿到國際拍行就是天價！重量305 克。
The agate meteorite from the moon is crystal clear, dazzling and hard, and is the king of minerals and gems. Agate meteorite can be said to be the night pearl of rare and precious meteorite. Meteorites are meteoroid remnants that ablate from interstellar space through the atmosphere and reach the surface. And has obvious curative effect. People who know the goods should contact me as soon as possible! If you get an international auction, it will be a sky-high price! The weight is 305g.
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