睡不着，被朋友的电话吵醒．．．她在中国大婚．．．激动死我了．．．索性起来研究婚戒

在自己的ＬＩＢＡ日志写过了．拿过来跟华人的ＪＭＳ一起分享

Tungsten carbide钨化合物质地
特质:最硬最不会磨损,稀有,不能刻字或调尺寸,便宜
Tungsten carbide is the hardest and strongest metal in the world. It is 3 times stronger than steel and 4 times stronger than titanium. Wedding rings made in tungsten carbide are almost scratch proof, and the polished finish will last for life. Tungsten carbide can be scratched by harder elements such as diamonds and corundum mineral like ruby and sapphire.

Palladium(Pd) 钯
特质: 属于PT家族,但是因为轻,所以比铂金便宜很多.比普通金要坚硬,不退色
Palladium is the perfect choice if you were considering a platinum wedding ring, but didn’t want to spend quite that much money. In comparison, palladium is much less expensive per ounce than gold and platinum, and this makes palladium a very affordable alternative to platinum. Palladium is a metal that is part of the family of Platinum Group Metals found on the periodic table of elements (symbol Pd). Just like platinum, palladium is a naturally white and strong metal. It is 30 times more rare than gold. Palladium offers all of the same benefits as platinum, except it is about 40% lighter than platinum, and therefore, it is much less expensive than platinum. Palladium weighs about the same as 14kt. gold. As with platinum, palladium rings will scratch when worn daily, but the white color of the metal will never fade, and the metal will not tarnish. This is not a fad metal that has no value. Palladium is one of the rarest and most precious metals on earth, and we believe it’s popularity will be long lived, as long as the increasing demand doesn’t cause the metal price to escalate.
价位: 每个$80--$265不等

铂金和黄金区别
Unlike white gold, which is pure yellow gold mixed with alloys that overpower the yellow color and create an almost white color, Platinum is naturally white. Platinum is very durable and typically outlasts gold by many years. Platinum is also one of the heaviest metals, weighing almost 60% more than 14K gold. This property gives platinum jewelry the substantial feel that many people prefer. However, care and maintenance of Platinum is a bit more demanding than gold is.

90%,95%,100%铂金区别
Platinum in its pure form is relatively soft. When alloyed with Ruthenium, however, it is extremely strong and malleable. If we were to offer 100% pure Platinum, your ring would bend and scratch far more easily than PT950 Platinum does. The stamp of PLAT* or PT950 on your ring is your guarantee that it is truly 95% pure. Some jewelers offer PT900 platinum which is no stronger and contains less platinum. We encourage you to be careful with PT900 as some jewelers use it to increase their profit by selling a customer inferior metal, and thus providing a lower value.

为什么铂金比黄金贵
Platinum is mined primarily in Russia where the unstable political and economic climate has led Russia to restrict the export of Platinum. As a result, prices are typically higher than gold. Platinum is a rare metal that today requires the processing of nearly 10 tons of ore for one ounce of Platinum. In comparison, Gold requires only 3-4 tons of raw rock for the same yield. There are also fewer Platinum mines. For every 10 Gold mines there is only one Platinum mine.