chrome hearts online store

Opal can be divided according to its color black opal, white opal, yellow opal, black opal prices highest. Improve grades in order to lower the price of white or yellow opal, it was on the use of artificial methods make it change color, become "black opal, to reap Gregory. The main method is to cook with sugar or injected plastic, so the black white opal. The method of identification is significantly different to the, candied or injection opal gravity lighter tested in water, the specific gravity value. Also heated needle injection test opal, natural opal hot needlestick not enter injection molding the Opal able headlong into, and will produce plastic smelt of smell.
Identification of tourmaline
Tourmaline is a mid-range gems, but the pink and bright blue tourmaline is more expensive, it also has to take the imitation goods appear. Common take imitation products into two categories, one for colorless tourmaline artificial color; processing in red glass. chrome hearts online store The method of identification is really tourmaline often has significant dichroism, visible double shadow; vivo visible the tubular inclusions or cotton wool material, chrome hearts online store was cambered triangular cross-section of the crystal. These features take the imitation goods are not, workers stained tourmaline, due to the color hanging stagnation, lack of natural tourmaline Baoguang ", it is not difficult to identify.
  Destino tourmaline pendant

  Natural tourmaline
Crystal Identification
Natural crystal clear and transparent, chrome hearts online store and often contain cloudy, star punctate or flocculent gas-liquid inclusions, and tend to have micro-cracks. In addition, the natural crystal polarized visible phenomenon of double crystal, crystal sphere, looking down from the top, met with double shadow. The synthetic crystals or glass products, body homogeneous pure, no cracks, internal tend to have small bubbles. The sphere look down, did not see a double image of the following chrome hearts online store lines. Feel recognition, can feel the synthetic crystals greater than the proportion of natural crystal; cold sense of natural crystal, glass temperature sense.