页面

2013年2月19日星期二

Precious stones, must have the following characteristics

1, “beauty”, that gorgeous crystal, dazzling
jewelry If this is not the United States can not become a gem, this beauty or performance of brilliant colors, or appear to be clear and clean, or with a special optical effects (such as a cat’s eye, change color, luminous phenomenon), or with a special pattern (chrysanthemum stone, agate, plum jade). For example, the same as the diamond, transparent little flaw can be used to pondering a valuable diamond, transparent, and more flaws, the color black can only be used as industrial raw materials.
2. “Long time”, ie texture hard, wear-resistant, capable of enduring
The jewelry of high value, people would expect it to be durable, can hedge against inflation or even hereditary items. Diamonds have become the most expensive gem, one of the reasons is that it is the hardest in the world, afraid of corrosion gem, so the higher value of the gem world multi hardness, corrosion-resistant silicate minerals (such as Emerald) minority oxides (such as ruby, sapphire), and minerals such as diamonds, while soft, susceptible to corrosion gems (such as Xiuyu, South jade, etc.) lower value, commonly used in the production of handicrafts workers win; but there are a few gems not listed, such as opal, pearl.
3. “Dilute” the low production
Suddenly, the world is extremely rare emerald and superior quality per carat (0.2 g) of thousands of dollars, and some quite beautiful, but also resistance “as long as” precious stones such as amethyst, due to production more mining easier, their prices have been lower. Some common rocks, after pondering with beautiful and durable features, but it can not become a jewelry extended family, the reason is that the matter must be cheap and easy to get.

没有评论:

发表评论