DIFFERENCE BETWEEN GOLDS
22k Gold
22 karat is made of 92% pure gold and 8% alloyed metals. These alloyed metals are often copper, silver, nickel, or zinc. Due to the added alloys this type of gold karat is more durable than 24k gold. However, as with 24k gold, 22k is also not often used in jewelry. A key reason for this is that precious gemstones tend to be heavier than the metal and so the 22k cannot support them.
18k Gold
18k is a popular choice in modern designs. Made from 75% gold and 25% alloy, you'll find this type of gold karat is more durable than those with a higher purity. This makes it excellent for daily wear. From everyday rings, to contemporary chains, with proper gold jewelry care and cleaning you'll be able to wear your new 18 karat pieces for a lifetime.
With a higher percentage of gold than the types of gold karat below, 18k jewelry is ideal for those who have more sensitive skin. Due to the purer content you're less likely to have a reaction.
14k Gold
58% pure gold and 42% alloyed metals, 14k gold is very durable due to the high alloy content. The alloys also cause this type of gold karat to be a paler yellow than those with more pure gold.
10k Gold
10k gold is the least pure of all 7 types. With only 41.7% being made from pure gold. Due to the high alloy content it is often heavier than higher karat types, as well as being the most durable of all. The higher alloy content does however make 10 karat gold less optimal for those with sensitive skin as it could set off allergies.