Gem Discoveries of the 20th Century!
You’ve probably heard of the gemstone called opal, but have you ever heard of black opal? Gemology is a young field of study that continues to evolve- so new that we’re still discovering gemstones! From the uniquely colored to the ultra-rare, researchers and average people are making discoveries around the world. Join Rob to learn about ten of the most notable gemstone discoveries of the 20th century.