Mexican Jalisco Rainbow Obsidian Rough Chunk! Old Vein Lace Agate Black Feather Lace Agate is

Black Feather Lace Agate is a rare Lapidary Agate from Mexico

so I'm not sure how it would hold up

and can potentially even have plume like structures

This box is a trimming

Most of these thundereggs were dug before the 1970s

Mexican Jalisco Rainbow Obsidian Rough Chunk! Old Vein Lace Agate Black Feather Lace Agate isMexican Rainbow Obsidian is also known as Jalisco Obsidian. It tends to be a pretty pure form of Obsidian, with high flash and bright colors. Typical chunks of Jalisco Obsidian normally have only one color of flash, though under rare circumstances, there can be multiple colors present. Unlike Velvet Obsidian, the magnetite in Rainbow Obsidian generally only flows in one direction, which creates the effect you see. Rainbow Obsidian does only flash