Reality Test for Loose Diamond

These are some test you can perform on loose diamond to check whether it is real or not -

• Place a dot on plain white paper with pen or pencil. Turn the diamond you want to test on that ‘dot’ upside down.
  
  
  
  Diamonds tend to refract light so if you can see the dot through the diamond, chances are it’s a fake.
• Diamonds are known to be good conductors of heat. Breathe on the diamond you want to test. If the diamond stays foggy for about 4 seconds then your diamond is real one. Beware, some capped cubic zirconium based with real diamond and moissanite will pass this test.
• Real diamonds can be cut more 'finely' than a fake diamond or
  
  
  
  CZ so the edges between the facets will always be very sharp on a real diamond. If you look at both together you can clearly see the difference.
• Look at the color of the diamond. If it’s perfectly clear chances are there that your diamond may not be real one. As diamonds generally have a slight yellow tent, thus they are set in yellow gold to disguise the color better.
• Cost of the diamond can also tell you whether you are buying real or fake stone. If you are offered a large stone for a good price, chances are it’s not real.