Stainless steel
what does tk316 mean on the inside of my ring
What does TK316 inside a ring mean
The stamp "TK 316" on a ring indicates that the ring is made of stainless steel. Stainless steel is a common material used in jewelry due to its durability, resistance to tarnishing, and affordability. The "316" specifically refers to the grade of stainless steel, which signifies that it contains a higher level of chromium and nickel, making it more resistant to corrosion.
About $10 to $50, mostly on the lower end of that depending on how many stones it has in it, fake ones mind you.