That is the company or maker. Your ring is gold with the 14k on it.
It probably refers to a company.
lc = learning centre
What do you mean by the term LC and when it is used
LC is not a common designation for a diamond.
letter of credit
LC usually stands for Liz Claiborne.
Linen closet
low crotch
Two differences are the LC has an O ring at the cylinder base in addition to the regular gasket, and the LC regular base gasket is about a quarter the cost of the L model base gasket.
LC-MS is the abbreviation for Liquid Chromatography - Mass Spectrometry. It is a method for doing analysis.
Lower Case
Lucent Connector.