Green Common Opal 🌱 There are three main types of opal: precious, common, and potch. The opals featured in this video are classified as common opals. Unlike precious opals, which are known for their vibrant play of color, common opals lack this type of sheen. However, they are still striking in their own right, often appearing opaque or translucent and showcasing a range of solid colors such as white, gray, brown, yellow, orange, pink, purple, blue, and, of course, green. Properties include; -