Instruction
1
High cost and popularity of coral has led to a large number of fakes. P. Gilson in France developed a technique of making artificial corals of calcite and dyes. They are much cheaper and are a good imitation of natural coral.
2
Consider carefully the stones - imitation manufactured by the method of Gilson does not have a mesh drawing. Natural corals to the touch like amber, and the quartzite is a cold stone. Note the slice where the hole for the thread. Coral shines equally; in contrast, quartzite stone has a grayish texture.
3
If the drop on the sample with hydrochloric acid, extruded from coral quartzite hissing.
4
Cheap knockoff of plastic are easy to distinguish in appearance and to the touch. Touch the coral heated the needle on the plastic forms a black dot, and you will feel the smell of burning plastic, which will not happen with natural stones.
5
Sometimes white coral staining give the noble red and pink. Lower the ornament into the hot water, bleached corals will color the water. They will leave marks on the body, especially in hot weather. The bad fakes are often the color goes completely with conventional lowering products with "coral" in the water.
6
Please note: rings and rings with natural corals, as a rule, are cut cabochon is a semisphere and enhance the color of polishing and impregnation with wax.
7
If imitation quality, she doesn't wear makeup and jewelry with pressed coral look very impressive. So if you are not trying to Scam, selling the decoration of artificial stone, necklaces, rings and earrings in a beautiful frame with pressed stones are very beautiful and are inexpensive. In this case, you have a great opportunity to buy exquisite adornment for little money.