Referring to the measurement of purity in respect to rare metals, Karat simply means top quality - the height of something in regards to how great it is.
David : “I just bought that new phone.”
Cheryl : “Does it live up to the hype?”
David : “Oh, it's Karat. Best phone I've ever owned.”
The most expensive labubu in the world made of REAL 24 karat gold, and weighing 200 grams. It costed 20,000 pounds to have him made by basically melting down gold bars and putting it in a shape thing that was the shape of a labubu.