How can we verify whether a diamond is real or not ?

Answer 1

Look with a magnifying glass: when you see scratches, you can be sure it is glass.
When you see no scratch at all, try to cut it with a knife. When it is impossible, it is a diamond.

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Answer 2

There are many tests of hardness like scratching hardened glass or scratching another diamond. However, the most reliable test is to take the diamond to a Jewish pawn shop and see if the owners eyes light up.

Answer 3

Here is a link to diamonds and diamond simulants
http://ist-socrates.berkeley.edu/~eps2/wisc/Lect6.html
without the proper Gemological testing equipment it would be difficult. This link explains well I feel the properties of diamonds the simulants,
Here is another link the jewellery trade uses and is public
This site has its own search engine so you can search any question you may have'
Excuse the spelling jewellery gemmology is spelt differently in the U.S we use 2 LL in jewellery here and 2 MM in gemmology
Jewellers contribute to this site enjoy
http://www.ganoksin.com/

Answer 4

All compounds have a specific refractive index, a signature if you will. You measure the refraction of light as it is passed through an object and measure the amount of bend the light makes, which tells you what the thing is made of.

Answer 5

The scientific way is to do a refraction test, and this is what ppl who test gemstones do.

THe easier way is to write on the hotelroom mirror with it. If it writes without crumbling, chances are, it is a diamond.

Answer 6

If it can cut glass it's a real diamond.

Answer 7

Using Moh's scale of hardness

Answer 8

if your boyfriend isn't swimming in the douogh and the rock is a BIG one it's probably not real :-) Honestly.. take it to a jeweler.

Answer 9

Same way we vairfy its not a diamnod

Answer 10

if it's easily broken, it aint a diamond...