14K Gold contains 58.3% pure gold. It is alloyed with other metals like copper, silver, and zinc. The higher percentage of alloy makes it less pure.
18K Gold contains 75% pure gold. It has a higher gold content and is alloyed with a smaller percentage of other metals. This makes it more pure and more valuable.
18K Gold has a richer, deeper yellow color because of its higher gold content. This gives it a more luxurious appearance. 18K Solid Gold pieces are made to last forever. The color never changes, so you can wear Nubi every day, everywhere.

18K Gold has the quality that increases value every single year and considered a great investment that becomes a long loving family heirloom. 18K solid gold has the best resale value.