Valuable Stones Distinguished by their Properties. One valuable stone is best recognized
from another similarly as substances of different kinds are recognized, in other words, by their
properties. For instance, salt and sugar are both white, both are dissolvable in water, and both are
scentless. So far the emphasized properties would not serve to recognize the two substances. However
sugar is sweet while salt is pungent in taste. Here we have a distinguishing[2] property. Presently, similarly as
salt and sugar have properties, so have every single valuable stone, and keeping in mind that, just like the case with salt
furthermore, sugar, numerous valuable stones share properties for all intents and purpose, yet each has likewise a few properties
which are unmistakable, and which can be depended upon as separating the specific stone from
different stones. In choosing properties for use in distinctive valuable stones, such properties as
can be controlled by amount, and put down in numbers, are likely more dependable than
those that can be seen by simple review. Those additionally which have to do with the conduct of
light in going through the stone are incredibly significant.
Significance of Numerical Properties. It is on the grounds that pearl vendors so regularly depend upon the more
clear kind of property, like tone, that they so oftentimes commit errors. There might be
a few distinct kinds of stones of a given tone, yet each will be found to have its own
mathematical properties, for example, density,[3] hardness, refractive force, dispersive force, and so forth, and it
is simply by a precise assurance of a few of these that one can be certain what stone he
has close by. It should next be our errand to discover precisely what is implied by each of these mathematical
properties, and how one may decide each effortlessly and precision.
