The gold content, color, hardness, and price of 18k gold and 999 foot gold are different.
1. Different gold content
18k gold refers to gold jewelry with a gold content of 75%. The gold content of 999 foot gold is 99.9%, so the gold content of 999 foot gold is much higher than that of 18k gold.
2. Different colors
In terms of color, 18k gold is more diverse than 999 foot gold. 18k contains other non-ferrous metals, and 18k gold comes in white, rose gold, gold, and other colors. The color of 999 foot gold is a bright golden yellow with no other colors.
3. Different hardness
18k gold contains other metals, so its hardness is relatively high. 999 foot gold has a high gold content and a relatively soft texture, making it difficult to create jewelry styles with more complex craftsmanship.
4. Different prices
The purity of 18k gold is not as high as 999 pure gold, and most of the price is on the process cost, so 18k gold is not enough to preserve its value. Gold has great potential for preservation and appreciation, with 999 foot gold being slightly more expensive and more valuable than 18k gold.