How can you learn more about mineralogy and gemology?

Sep 16, 2024 ... Reserves. The distribution of chromium reserves is a close reflection of global production. Kazakhstan and South Africa hold most of the world's ... Aug 19, 2021 ... Security challenges, a lack of infrastructure and severe droughts have prevented the extraction of most valuable minerals in the past. That's ... Sep 4, 2024 ... Because of its rarity and industrial application, this silver-white noble metal is the world's most expensive mineral. Rhodium became popular as ... Jun 26, 2017 ... Although gold was the most valuable mined metal globally in 2016, the individual mines are relatively small compared with those extracting iron ... Mar 10, 2020 ... Palladium is the most expensive of the four major precious metals – gold, silver and platinum being the others. It is rarer than platinum, and ... Dec 4, 2020 ... Blue Diamond is one of the rarest and expensive gemstones in the world. The Oppenheimer Blue is the largest blue diamond ever sold at auction. Oct 7, 2020 ... Copper is most frequently sourced from open-cut mines. Chile is the world's largest supplier of copper, but the metal is also produced elsewhere ... Feb 27, 2024 ... SOECs are the most expensive due to the energy required to operate at such high temperatures, and the rare earth metals used in their structure. Aug 30, 2023 ... Copper is also one of the world's most recyclable metals. Chile holds more than 20% of the world's copper reserves – worth around $1.6trn. Jadeite is found in many colours, from white and apple green to lavender and mauve. However, deep emerald green (also known as 'imperial jade') is the rarest ...