tombeads

These bandings may have the different color (red, blue, purple, green, black, waits in vain and so on), if is assumes the black and white interaction the banding, is called the thin raw white silk black agate;Crazy Lace Agate Beads  Assumes the red and white banding to be called entangles the silk black agate. If in the thin raw white silk black agate's black banding is very wide, may cut alone processes the black agate bead, still had the very thin white banding unavoidably, may see under the sunlight. Therefore, in the black agate bead saw that has the white tiny stripe, is very normal. the black agate assumes generally to is not transparently transparent, the refractive index approximately 1.54, the proportion 2.60, degree of hardness 7, the glassy luster, the shell closes the fracture. Has the concentric ring belt-shaped, the lamellar, corrugated, entangles filiform, the grass branched and so on assorted shape beautiful pattern is the black agate biggest artistic feature. Its pattern's color are many and varied, has, the ash, the yellowish-brown white, black and so on. Because the black agate has the natural pore, therefore may also dye Cheng Hong, blue, green, yellow, brown purple and so on each kind of color. After the dyeing processing black agate, is called in Brazil “umbu”. The black agate is the application widespread jade material since the ancient times, ancient times the people often described the wealth by “the pearl agate”; Blue Crazy Lace Agate In the overseas many fables mentioned that the black agate can give wearing to bring happy and the confidence, brings the fond dream. Natural black agate, non-artificial dyeing. The black agate is one kind of colloid mineral, in the mineralogy, it belongs to the calcedony class. Since the ancient times, the black agate received people's welcome, the ancient times “seven treasures” has valuable one is the black agate. The black agate product in today was still one of our country gem profession most main products.