Flint Stone - Germany - 10 pounds Blue These colors are due to

These colors are due to the presence of iron within the mineral

but it generally has a density between 2

depending on the quality of the cut and the presence of any inclusions

4 grams per cubic centimeter

with orbicular patterns or concentric circles in lighter shades of green or black

Flint Stone - Germany - 10 pounds Blue These colors are due toLarge pieces only. Locality: Harz Region, Germany Photos have not been edited or altered, just taken in different daylight conditions to show the variation in color. Pieces are held in hand to help with scale and does not necessarily represent 1 pound. Specific pieces photographed may no longer be available.