Real opals are natural gemstones formed from silica and water, often containing small amounts of other minerals. They are known for their unique play of color, which is caused by the diffraction of light as it passes through the tiny silica spheres within the stone. Real opals can come in a variety of colors and are often found in Australia, which is the world's leading producer of opals. These gemstones are highly valued for their beauty and rarity, making them a popular choice for jewelry. **

Opal mining in Australia typically involves searching for opal deposits in areas known for opalization, such as Lightning Ridge, Coober Pedy, and Andamooka. Miners use various methods such as open-cut mining, underground mining, and tunneling to extract opals from the earth. Once opal deposits are found, miners use tools like picks, shovels, and machinery to extract the opals from the surrounding rock. It is important for miners to have the necessary permits and follow regulations set by the local authorities when mining opals in Australia. **

One can make money with opals from Australia by purchasing raw opals from miners or wholesalers, cutting and polishing them to enhance their beauty, and then selling them as finished gemstones to jewelry designers or collectors. Another way is to create custom opal jewelry pieces and sell them through online platforms or at jewelry shows. Additionally, investing in high-quality opal mining operations or opal mining leases in Australia can also be a lucrative way to make money with opals. **

I'm sorry, I cannot physically see the opals you are referring to. However, if you have opals in your possession and are unsure of their authenticity, it is best to have them evaluated by a professional gemologist. They can assess the opals and determine whether they are real or not based on their characteristics and properties. **

Recommended trail running shoes should provide good traction, stability, and protection for uneven terrain. Look for shoes with a durable outsole, a rock plate for underfoot protection, and a secure fit to prevent slipping. Some popular brands for trail running shoes include Salomon, Brooks, Altra, and Hoka One One. It's also important to consider your individual foot shape and running style when choosing the right pair of trail running shoes. **

Nike's marathon running shoe is the Nike ZoomX Vaporfly Next%. This shoe is designed specifically for elite marathon runners and features Nike's ZoomX foam for maximum energy return and cushioning. The Vaporfly Next% is known for its lightweight design and carbon fiber plate, which helps improve running efficiency and speed. Many elite runners have set personal bests and even broken world records while wearing the Nike ZoomX Vaporfly Next%. **

Trail running in the mountains is a form of running that takes place on natural, unpaved trails in mountainous terrain. It often involves navigating through rugged and varied landscapes, including steep inclines, rocky paths, and uneven surfaces. Trail runners typically seek out mountain trails for the challenge, the stunning scenery, and the opportunity to connect with nature. It requires a higher level of physical fitness and endurance compared to running on flat surfaces, and it offers a unique and exhilarating experience for those who enjoy outdoor adventure and exploration. **

The fear of running a marathon can be caused by a variety of factors. Some common reasons include the fear of failure or not being able to finish the race, concerns about physical injury or exhaustion, anxiety about the intense training and commitment required, and worries about the unknown challenges that may arise during the race. Additionally, the pressure to perform well in front of others or meet personal expectations can also contribute to the fear of running a marathon. **