Making an investment in lifetime pieces like a diamond engagement rings requires reassurance. It would be devastating for a bride to know after years that her prized 6 carat diamond ring was nothing more than a fake. If you have received or inherited a gift of diamond jewellery, it?s understandable that you would at some point wonder whether they are real and natural diamonds, especially when ?lab grown? diamonds are now so commonplace.
Luckily, there are several ways to test whether a diamond is real, rather than a similar-looking imposter. We?ll take an in-depth look at some at-home tests and let you know which is the most reliable test to spot a fake diamond. To give you ultimate peace of mind, it can also be a good idea to visit to a jeweller for professional testing using their equipment.
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The Water Test:
The water test is considered as one of the easiest tests ever: all you need is a normal glass, filled three-quarters with water. Then, just pop the loose diamond into the glass.

Reaction of real diamonds: If your diamond is real, it will sink into the glass
Reaction of fake diamonds: If your centre stone is quartz, it will want to float, or at least stay at the water’s surface.

This test works because of the fundamental physical law of density ? while diamond is more dense than water, quartz is not. One thing that can make this tricky is that you need a loose diamond, rather than one mounted in a ring.
The Fog Test:
No equipment at all is needed t...