What karat means
Karat measures how many parts out of 24 are pure gold. 24K is pure and far too soft for a grill. The rest of the alloy — copper, silver, zinc, palladium — adds strength and sets the color.
10K = 10/24 (41.7%). 14K = 14/24 (58.3%). 18K = 18/24 (75%).
Color
The higher the karat, the deeper and warmer the yellow. 10K looks slightly pale next to 14K; 18K has that rich, almost orange glow. In white gold the difference is smaller because white gold is usually rhodium-plated for a bright finish. Rose gold gets pinker as copper content rises, so 10K rose is often the most pink.
Durability
Lower karat means more alloy, which means harder metal. 10K resists scratches and dents best — a good pick if you wear your grill a lot. 14K is plenty strong for regular wear. 18K is softer and shows wear sooner, so it suits people who wear their grill for special occasions.
Price and value
At Grillz Miami: 10K $250, 14K $350, 18K $420 per tooth. A top six works out to $1,500, $2,100 or $2,520. All three are solid gold that will not tarnish and holds resale value according to its weight and purity.
Our take: choose 14K unless you have a reason not to. Pick 10K for budget or toughness, 18K if color is everything.