1. to inject or implant (a vaccine, microorganism, antibody, or antigen) into the body in order to protect against, treat, or study a disease. 2. to affect or treat (a person, animal, or plant) in this manner. 3. to introduce (microorganisms) into surroundings suited to their growth, as a culture medium.
925 is a standard sign used to mark sterling silver, and the meaning of the stamp is that the silver content in the piece is 92.5% (i.e., the remaining 7.5% is comprised of other elements). Perhaps because the âgoldâ jewelry you are looking at is not actually made of gold.
Identify 22-karat gold by the â22Kâ mark, which indicates that jewelry is 91.6 percent pure gold, or 22 parts pure gold out of 24. Note that 22-karat gold jewelry can also be stamped with â916â or â917.â. Remember that an â18Kâ mark means jewelry is 75 percent pure gold, or 18 parts pure gold out of 24.