6 results for mahogany

Mahogany Obsidian is semiprecious stone that is a deep black with blood red streaks. The red coloration is likely the result of trapped hematite or iron. Mahogany Obsidian was probably named that...

Silver Sheen Obsidian or Gold Sheen Obsidian are chatoyant stones. When the semiprecious stone material is held in bright light it has a flash of sparkling silver or gold colored chatoyance or light...

Although "tree" is a common word, there is no universally recognized definition of what a tree is.  As I continue my pursuit in learning about Petrified Wood, I realize that there aren’t a lot of good