14K Gold vs 18K Gold vs Platinum:
The gold used in jewelry is mixed with different alloys to make the metal more hard. 14K gold is mixed with more alloys than 18K gold. Although 18K gold is a more pure gold, making it more yellow, 14K is harder and a more toned-down yellow.
Platinum is naturally white, while gold (even white gold) is yellow by nature. Some benefits of platinum are that it’s white by nature, it’s a heavier metal, and it’s more durable, requiring less polishing. Gold is less expensive than platinum, is naturally more shiny than gold, and scratches less easily. Both can be polished up and worn for many years.