Amethyst Stalactite Slice from Uruguay Korite Heulandite was named in 1822

Heulandite was named in 1822 after John Henry Heuland

Some remnants of matrix mineral on one side and the core of the cluster has feldspar

much of the mining is done in thousands of small hand-worked digs

PLEASE NOTE: If you have a 395 nm light or a black light

which was used by the ancient Egyptians to adorn their most precious treasures

Amethyst Stalactite Slice from Uruguay Korite Heulandite was named in 1822Amethyst stalagmite stalactite slice from Artigas, Uruguay. Size: 61 x 50 x 5 mm. 28 grams Amethyst stalagmite slices are a type of mineral formation that occur when water containing dissolved silica and iron flows over the ceiling of a cave and forms icicle like structures. The iron gives the stalagtites a purple hue, while the silica crystallizes into quartz. When these stalagmites are cut into thin slices, they reveal a beautiful pattern of