Amber's English name is Amber, which comes from the Latin Ambrum, meaning "essence". Some people say that it comes from Arabic Anbar, which means "gum", because the Spanish call Arabic gum and amber buried in the ground amber. In ancient China, amber was regarded as a "tiger spirit". The earliest recorded resin fossil was Carboniferous, but amber did not appear until the early Cretaceous. The famous amber sedimentary rocks come from the Baltic Sea and Dominica. Amber is mainly the resin of ancient gymnosperms, and now there are also gums produced by flowering plants. Amber in the Baltic Sea sometimes contains insect or plant residues. It is speculated that amber may have been formed in the forest of primitive pine tree amber pine. Unlike amber, Holocene semi-fossil hard resin will melt in organic solution. Amber is a kind of resin fossil, which was buried underground tens of millions of years ago and formed through certain chemical changes. It is an organic mineral. Amber has a variety of shapes, the surface often retains the lines produced when the resin flows, and bubbles and ancient insect or plant debris are often seen inside. The color is generally yellow and red, and the front is transparent. Amber will soften at 150℃ and will also dissolve in alcohol. High-quality amber can be processed into handicrafts, and inferior amber can be used as chemical raw materials. Amber is the product of sedimentation, mainly produced in the sediments of Cretaceous or Tertiary glutenite and coal seam. China, Liaoning, Fushun and Henan Xixia are rich in amber.

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