Pure gold is pure gold; 24K. The higher the carat count the higher the gold content. 18 carat gold will have 18 parts gold, and 6 parts something else (silver, copper, mercury). If Thai gold is softer, then it has more gold than say 18K gold that you might buy in another store. 24k gold is too soft for rings, they will get bent out of shape, and become damaged very easily.
