Top Rated Ethiopian Welo Opal 3,35ct Family Size [TAa7I90j]

The internal structure of precious opal makes it diffract light; depending on the conditions in which it formed it can take on many colours. Precious opal ranges from clear through white, grey, red, orange, yellow, green, blue, magenta, rose, pink, slate, olive, brown, and black. Of these hues, the reds against black are the most rare, whereas white and greens are the most common. It varies in optical density from opaque to semi-transparent.