Amber is the hardened and fossilized resin of certain pine trees such as the Pinus succinifera.
Amber is either collected from sea shores or fished off the waters, or it is mined byopen - pit mining. Yellowish-brown or honey color is the best known color for amber which are fished or mined along the coasts of Baltic Sea, these are popularly known as Baltic amber. Natural ambers are very old from hundreds to millions of years. Inclusions like frog, butterflies, lizards, spiders, ants, mosquitoes and other insect species inside amber decides its worth.
Copal resin (kauri gum) has similar appearance (simulant) that of an amber stone which is generally confused with real amber and mistakenly used in jewelry asamber beads.
Take a glass of water and add 2 spoon of salt in it. Now dip amber and plastic inside this saturated salt solution. According to Archimedes Principle, which states that, if the S.G. of the stone is greater than that of the liquid it will sink and if the S.G. of the stone is less than that of the liquid it will float. Therefore, amber starts to float on saturated salt solution while plastic sinks. This test is only for separation of amber from plastic and confirms that amber floats in saturated salt solution. Real amber having inclusions of insects may react differently to this test.