What does HG mean when in the inside of a ring?

When "HG" is found inside a ring, it typically stands for "high gold" or "18K gold," indicating that the ring is made of a high percentage of gold, often 75% pure gold and 25% other metals. This marking suggests quality and value, as higher gold content generally means a more valuable piece of jewelry. Always check with a jeweler for confirmation, as markings can vary by manufacturer.