Labradorite Slab Lapidary Stone Slice Cut Rock Priday Moss Bed Thunderegg and the original log was

and the original log was from an old stock collections

Weight: Approx 6 lbs 2

It does appear that they may have been heat treated to bring out more of the blue in this

So far as I know

this is from Madagascar

Labradorite Slab Lapidary Stone Slice Cut Rock Priday Moss Bed Thunderegg and the original log wasLabradorite Slab Flashy Feldspar with Stunning Labradorescence Add a show stopping piece to your collection with this beautiful Labradorite slab, a high quality variety of feldspar known for its brilliant optical display called labradorescence. When viewed from the right angle, Labradorite reveals a glowing array of colorscommonly including blue, green, gold, and even pinkmaking it a favorite among lapidary artists, crystal collectors, and jewelry