I know this is going to be a rather pedantic posting but I’m old
enough, wise enough and rich enough not to care!
I’m going to apply a lifetime of experience and a qualified
gemologist’s eye to this.
A ruby can only be referred to as such if the principle color agent
is chromium. Even if it’s just pinkish it can be called a ruby! So
long as it responds to a test for chromium it’s ruby. This test is
usually done with a Chelsea Filter.
If it’s colored by anything else it’s best regarded as pink or red
Likewise some beryls are colored green by vanadium not chromium.
These are best regarded as green aquamarine (which is normally
colored by iron) but this is debatable and some gemologists will
certify these stones as emerald. It’s quite rare for them not to
contain a trace of chromium so this is acceptable practice though
the certificate should include this
“Red Beryl” is red beryl. It’s confusing and, I think, slightly
naughty to refer to it as emerald. Do you refer to aquamarine,
heliodor, goshenite and morganite as blue, yellow, white and pink
emerald? Shame on you!
On the other hand that sort of of name-calling can sell an otherwise
dull stone. Pretty red sapphires sell themselves as exotic, lusted
Tony Konrath F.G.A.