Diamond Certification

 In fact, to identify the authenticity of a diamond, with a 10x magnifying glass only as an auxiliary operand can be a simple observation
Method One:
Observed diamond waist, waist-shaped frosted if it is best suited for this method, because more than any diamond imitations hard  abrasive tools to take, it will not appear as risk imitations like thin strip lines, diamond waist is grainy appearance.
Method two:
Also because of the diamond imitations than to take a hard, run imitations facet ridge often feel obtuse than diamond, and diamond facets must be a sharp ridge. Method three:
Than the risk-based diamond imitations hard, take imitations facet ridge often appears wear. Method four:
If left natural diamond surface, there is the opportunity to discover the natural surface of the diamond's unique "triangular growth pattern five:
If the diamond appear Bengduan mouth, usually are ladder-like appearance, but it will take very different presentation of imitation goods curved arc or conchoidal. A specific gravity test:
  There are a measure of the proportion of  drill bits liquid gemstone weight; specific gravity of 3.32 we can use the test liquid used genuine diamonds. The specific gravity of 3.52 natural diamonds, the proportion of all natural diamonds placed in the water will sink, so that both the proportion of water floating in gems, diamonds can be sure it's not.
(2) penetration observation:
  Diamond has a high refractive index, the higher the refractive index of the diamond, the stronger the light reflected power, relatively low degree of perspective. May prepare a picture of a straight paper to be measured two unknown diamonds, face down, capping in a straight line from the back of the diamond to the naked eye directly read on, if they  floor polisher pads can see the diamond under pressure a straight line, it is certainly not a natural diamond.
3 lipophilic law:
  There is a diamond on the oil "oil absorption" fake diamond does not have this feature. Diamonds dipped slightly in the face amount of grease, rub the diamond with the thumb, the thumb will feel a plastic viscosity, easy to slide, and then let the thumb with fake diamonds slippery feeling.
4 breathe test:
  Natural diamond heat transfer capacity, good heat disperse quickly. Diamond to be tested near your mouth, breathe gently, so that the tested diamond covered with mist, then immediately watch the diamond mist volatile situations, such as natural diamonds, the fog will be immediately dispersed, whereas in the fog fake diamonds remain for a while, until dispersed.