Does 18k Gold Plated Turn Your Skin Green? 18 karat gold is referred to as Solid Gold. This is because it is the best and is the highest quality of gold after the 24k gold. The 24 karat gold is excellent, but it is very soft, can scratch easily, is very bright in colour, etc. The 24k gold is mixed with some alloy, about 25%, which leaves the gold at least 75% of the entire jewel; this makes up and produces the 18k gold. Making it easier to work with and on. This explains that the more metal added to 24k or pure gold, the lesser the karat of gold. For instance, when the alloy percentage is raised to about 40%, with gold being about 60%, we have 14 karat gold. When it is both about 50%, we have the 12k gold, which its millesimal finesse is 500. However, the 18 and 14 karat gold have been debated on being the best, but if you're a person who loves quality, is detailed and careful, not just 18k would be suitable for you, even the 24k would be perfect for your honourable self. You can take a look at our gold bullion ingot pendant at The 18k gold and higher purity would speak your class and, at the same time, save your skin. 18k gold is the most popular luxury watch, rings, earrings, etc., now. Its very bright yellow colour from 24k gold is toned down to give the jewellery a very dainty look. This is why it is primarily purchased in engagements and weddings rings.