What does 10K THL inside a ring mean?

The marking "10K THL" inside a ring indicates the metal content and composition of the ring.

10K: This refers to the gold content of the ring. 10K gold is an alloy that contains 10 parts pure gold and 14 parts other metals, such as copper, silver, or zinc. This means that the ring is made of 41.7% pure gold.

THL: This is an abbreviation for "thailandium," which is a type of gold alloy commonly used in jewelry. THL is composed of gold, copper, and a small amount of zinc. It is known for its durability, hardness, and resistance to tarnish, making it a popular choice for jewelry.

Therefore, "10K THL" inside a ring indicates that the ring is made of 10 karat gold and the alloy used is thailandum.