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Black agate and obsidian difference? The reason that here carries on this quality of material's gem the quite primary cause is: First, is the black department the treatment stone. Second, the contour is similar. Third, the price is also close. Therefore sometimes, everybody curious this different gem difference will be.Mahogany crazy lace agate  Below we 11 discuss: ingredient: The obsidian, belongs to the igneous rock one kind, the ingredient by the silicon dioxide silicon primarily. After the obsidian is volcano lava rapid cooling, forms one kind of natural glass, belongs to the impure crystalloid crystal gem. The black agate, the essential component is also Sio2, the quality of material is very pure when is a gray. In the market condition black agate is after generally the warming natural black agate turns the black, in appraisal, because has not increased other nonnatural ingredient, therefore was still natural, and will not fade. texture: Above the obsidian will have the natural stripe, or has the spot, it is said most famous will have rainbow flash rainbow black sunlight crag Rainbow Obsidian. Moreover, obsidian some stripes assume the ellipse shape, was also the popular name single dark eyes sunlight or is the binocular obsidian (has a little looked like cat eye). The black agate's texture displays not the obvious ellipse ring-like, is only in the few part natural black agate in has the crystalline state, like stripped, spot punctual, compact massive. degree of hardness: Black agate's degree of hardness is bigger than the obsidian. effect: The obsidian, belongs to the buying in performance quantity, exorcises evil spirits extremely, can the force melt negative energy. Black agate, one of Buddhist seven precious things, was also the ancient times wealth symbol.Natural Crazy Agate Beads  Can improve the reproductive system, avoids frightened restless, may prevent the incantation witchcraft and so on negative energy infringement. price: Two section of gems belong to the middle-grade somewhat low crystal price, if certainly had the carving or design regards as another matter. regarding likes the black is the gem friend may act according to own likes selecting and purchasing these two kind of gems, exorcises evil spirits the characteristic besides it, wears time may also play the very cool feeling the beautification role.