A number of the most valuable gemstones are new discoveries that have ... This is an example of a raw, natural amblygonite ...

这颗重 54.29 克拉的浓彩黄色垫型切工钻石饰以 67 克拉的白色钻石，用 18K 白金镶嵌。由 Chatila 友情提供。摄影：Robert Weldon（罗伯特·韦尔登）/GIA 阳光、柠檬，还有各种黄色的花朵，总让人感到幸福、温暖和乐观。从钻石、黄水晶到柘榴石，很多宝石也呈现黄色 ...

Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy. After investing tens of thousands of ...

In the complex business world, connecting with your most valuable client (MVC) is a golden opportunity to grow and succeed. Your MVC isn't just any customer or client. They are "the dream client ...

In March 2024, the Council adopted the European critical raw materials act, as demand for rare earths is expected to increase exponentially in the coming years. Critical raw materials (CRMs) are raw ...

Some members of your group may want to do library research to understand a shared problem better and identify possible solutions. Others may prefer to visit places and people who have experienced ...

During the boom of big industry, companies raced to be the biggest by acquiring the most stuff—raw materials ... Many of the most valuable companies of this decade focus on intangible assets.