Queensland Boulder Matrix opal 33cts rough / slice Koroit some fires 30x20x6mm JanA43

Boulder Opal from the Queensland Opal Fields Sourced from the renowned Koroit mining area, this piece is a classic example of opal in an ironstone matrix. It has been sliced to expose its potential, revealing faces ready for exploration and work. This is a low-grade specimen with opal veins showing hints of color, making it an excellent choice for learning and practicing lapidary skills. Please note: Boulder opal is a natural combination of ironstone host rock with deposits of opal. Details: #JanA43 Weight:33cts Grade: :LOW GRADE Base Colour:  Boulder tone Source: Queensland Australia Field:  Koroit Size: 30x20x6mm  Type:   Koroit Boulder rough Slice Colours: bits colours to veins State : In the Rough sliced Solid, Natural, Untreated Opal, Ironstone Host rock