How to choose diamond ring base: 18K or platinum?
2020-11-10 10:09:59

People often ask what material and color base/band should I choose when buying a diamond ring? Generally the following 2 materials are available:

18K18K White Gold, 18K Rose Gold, 18KYellow Gold

PTPT950, PT900



1. 18K Gold

18K gold is a gold alloy containing 75% gold. For example, if you buy 10 grams of 18K jewelry, the gold content is 7.5 grams.


A. Good Processing Performance


Gold is very soft, so we often see people bite the gold on movies and TV to confirm the purity. Gold cannot be directly used to inlay diamonds and gems, it is easy to deform and diamonds are easy to fall off. The hardness, plasticity and casting properties of 18K gold are very good, firm, and will not drop stones. At the same time, the processing performance of K gold is very good. Many complicated jewelry styles can only be made with K gold, not gold.


B. Different Colors


The color of gold is golden yellow. By adding different metals, it can be adjusted to white, yellow, and rose gold. The color is richer and more suitable for modern people's aesthetics of jewelry.




C. Color will not change


18K gold is usually coated with a layer to prevent oxidation. After the coating is worn off, the overall color of K gold will not change, but it will be slightly dark and dirty, not as bright as when it was bought.


2. Platinum(PT)


Platinum is an extremely scarce precious metal. It is more scarce and precious than gold. It is commonly used to inlay diamonds, ruby and sapphires. How scarce is platinum? It is said that if all the platinum on the earth is put into a standard swimming pool, they are only 10cm thick. Similar to gold, pure platinum is also relatively soft and cannot be directly used to make jewelry or inlaid with diamonds. Other metals need to be added.

PT950: it contains 95% platinum and 5% other metals;

PT900: it contains 90% platinum and 10% other metals;



A. PT95 and PT900, which is better?


Different people have different views. Some customers like PT950 with higher platinum content, but we believe that PT900 is better in the industry. PT950 is still a bit soft, and there is a risk of falling stones in certain styles of prong, pave, and tension setting. There is no problem with the hardness of PT900, and the safety is the same as that of 18K.



B. Is PT950 more expensive than PT900 material?


Wrong! Palladium is added to the platinum material. When platinum is more expensive than palladium, PT950 is more expensive. When platinum is cheaper than palladium, PT900 is more expensive. It is more expensive than pure platinum; Sometimes palladium is more expensive, so the cost of PT900 is higher, but many merchants will price PT950 higher in order to cater to consumers' "outsiders' opinions."


C. Why is the price of platinum higher than 18K for the same style of ring?


At present, there is little difference in material cost between 18K gold and PT900, mainly because the metal density of PT is higher. If a ring of the same style is made of 18K gold and weighs 10 grams, it will cost about 14.5 grams to make it with PT900, which of course will be more expensive. Of course, this weight is just an example, usually you will not encounter such a heavy holder.


3. What materials do professionals recommend consumers to buy?


If you are buying high-quality big diamond rings , PT900 or 18K white is recommended, which can set off the white, bright and sparkling diamonds;

diamond promise rings

If you buysmall diamond band(jewelry inlaid with broken diamonds), you can choose 18K yellow or 18K rose gold, which is elegant and charming;

small diamond ring

For the same style, if you like a lighter one, you can choose 18K. If you want a heavier one, you can choose PT.

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