18K Gold
18K Gold is a precious metal that we often use, commonly used on craftwork such as watches and jewelries. 18K gold contains up to 75% of gold metal and it gives a lot of advantages to designing and processing high-end gold jewelries. By using 18K gold in jewelries, the design of jewelries can be exquisite and detailed; colors are even richer and more vibrant.
1). Very high in hardness and toughness. High resistance to abrasion and good ability to hold any inlaid gemstones. The hardness and toughness of 18K gold exceed pure gold and platinum, which makes it an excellent setting material for jewelries because it holds gemstones firmly. 18K gold has a load-bearing capacity 3-4x higher than pure gold. 18K gold jewelries can also be worn for a longer period without getting damaged easily.
2). Almost every high-end jewelry shop uses 18K gold in their products, for the reason that 18K Gold offers a wider variety in jewelry designs and colors. What more 18K Gold can offer is its artistic nature, this indicates that all designs made of pure gold and platinum can be replicated with 18K gold but not vise versa because of the softness of pure gold and platinum that makes them difficult to tolerate over-fine processing. K gold color varies with the proportion and content of different substances: 18K white gold appears to be white as it contains a large proportion of silver; 18K rose gold appears to be yellowish red as it contains copper; 18K yellow gold appears to be yellowish white as it contains palladium and nickel. The most commonly used K gold colors in jewelries include pale yellow, pink and rose.
3). Better in aesthetics and easier to match. Different K Gold color suits different skin colors and age range. K gold is more lustrous than pure gold and platinum, with clear edges and corners, and has a strong sense of internal light, which is exceptionally suitable for matching pearls. Apart from the value of the material itself, the artistic nature of 18K gold is even more valuable. K Gold could be several times higher than in price than pure gold for the jewelries of the same weight due to the craftwork done in K gold.
4). 18K Gold can be easily recycled, thus consumers can trade-in or change the designs of their 18K items through gold jewelry shops. This makes 18K maintains its collection value.
9K金
9K金含金量是37.4994，口語上來說的話就是將它當作是37.5%。 雖然含金量不會很高，但是它的成品也是能被稱為是黃金首飾的。然而，9K金它裡面含較多雜質，即便黃金是不會褪色的，裡面的雜質也會褪色，最終導致整個黃金飾品褪色，顏色變得暗淡。9K金含金量較少令其硬度大，可以更好地鑲嵌著各種寶石或者是其它的裝飾等等。含金量雖然低，但是在做成裝飾品上並不會輸給其它含金量高的黃金。
14K金
14K金中黃金的含量需要達到58.5%，它的色澤比黃金和18K偏淡。歐美風格的珠寶首飾經常採用它來加工製作。設計和工藝好的首飾也是很受歡迎的，歐美的首飾更多的強調的是設計感，而國內的購物觀念注重保值和收藏等價值觀念，還是有一些消費觀念的不同。對於特別複雜的款式建議用14K金，因為更加穩固。一般來說，14K金的價格在貴金屬中相對便宜，質地也比較硬，且不易生鏽、不易腐蝕。
24K金
24K金指純度99%的黃金。由於黃金質地柔軟，越純的K金質地越軟，並非日常佩戴的最佳之選。24K金作為K金中黃金含量最多的K金，不少人會挑選24K金珠寶首飾作為保值收藏的K金首飾，男士在挑選結婚戒指時也會傾向於24K金。24K的黃金比較軟，所以造型上有一定難度，款式方面受到限制，但可以保值。單看含金量肯定是24K比18K金價貴。但是18K金由於硬度高，加工難度比較高，自然加工費就高，所以遇到18K金比24K金貴的情況也自然很正常。一般來說，從傳統和求保值的人們傾向於選24K金，而現代的年輕人，側重於時尚、款式的個性多樣，則傾向於18k黃金首飾，因為其造型豐富、新穎，可以完全滿足人們的個性需求。
