"A diamond is forever, a diamond is passed down forever" refers to

it is your own descendants and can be passed down forever

.

Nowadays, as there are fewer and fewer natural diamonds,

Many artificial diamonds have appeared, and the degree of simulation is very high. The real diamonds cannot be seen with the naked eye. Fake

If you want to identify the authenticity of a diamond, you must

get it to a professional testing agency. First, analyze

the reflectivity of light. Only by looking at the spectrum and then looking at the composition of the material can you tell whether the diamond is genuine or fake, whether it is a natural diamond or a man-made diamond.