A 14mm size ring is a US size 3.
The ring size is 23.
About Size: 7 US.
19.5 ring size is
The rubies used to create fissure-filled stones are generally of very low quality. This kind of ruby is usually made more porous with an acid treatment. Then it is heated with other materials that make glass when the ruby gets hot enough. The glass fills in pits in the ruby. Therefore, parts of the stone are ruby, but parts are actually glass. Whether you consider this ruby "real" is up to you since parts are ruby, but depending on the size of the fissures that are filled, a significant part of the stone can be glass. The stones can be pretty, but glass does not have the same properties or hardness of a ruby.
You can get your ring size at a jeweler, wait for a physica ring sizer in the mail or find your ring size online using a website such as httpP://FindMyRingSize.com
You can go to a jeweler and they can size you there or you can download a ring size guide from online.
It appears you are speaking of gold filled rings, the method for making such is to fit a thin hollow tube of gold over a solid copper rod, then pull them through a draw plate. After several such reductions in size, the metal is cut to size and rings or bracelets or other objects are made from it.
RT" in the context of a ring typically stands for "Ring Size." Ring size is a measurement that indicates the circumference of the finger for which the ring is intended.
9 1/2 for a shoe size, 7-8 for ring
"K" doesn't stand for ring size, but the amount of gold in the ring.
Andre's ring size is not known but it is known that he had to have rings custom made. A pinky ring for Andre was the size of a silver dollar.