3LB 1oz RARE UV AAA Opalized Petrified Wood Rough From Blue Mountains, OR #600. Mined this stone myself and it is very stable, although there is crazing in the Hydrophane, but the core is very, very stable. Stone has been out of the ground for 1 year as of this listing date. This piece is made up of 5 types of opal… Green Hydrophane which is naturally cracked and weak on the wheel, white common which holds up well to shaping, the brown sections are true wood preservation which makes those zones the hardest, and orange/red opal which transluces with the beautiful fire of fire opal, but is not technically and slightly crazed, and last but not least a fantastic capture of seam opal set in the center which transluces yellow from what I can see. Certain zones in these materials may require stabilization before working, but the brown sections are hardest AND they glow orange to Red. Piece is also UV reactive showing lots white and possibly green (I have a weaker black light, greens harder to see). THIS IS THE BEST SAMPLE I PULLED! Top notch AAA specimen. Same area as the famous mining town of Sumpter, OR. Feel free to ask questions about items! This material is gem quality and a terrific example of both Silicate Mineral Replacement and true preservation all in one piece. The orange opal seems to occur beneath the bark, but may continue. Would be perfect for either collection display or lapidary working! Many Blessings and as always, thanks for viewing&####128591;&####128142.