What is Colors and Patterns of Boulder Opal Rings

You can see a wide range of colors in a Boulder Opal ring . Blues and greens, although common, are highly desirable. Reds and oranges within the ring are often considered to be more valuable because of their rarity. Purples and yellows can also be present , and although they are extremely hard to find, very few people have a taste for these colors, which is why they are not in demand.