VivianiteThese Vivianite crystals have, without question, the best luster and often gemminess of any Vivianite specimens to date from this country, or virtually any other country. Another outstanding feature is the wonderful color contrast between the vivid emerald green of the Vivianite and the altered red sandstone matrix. These pieces have what I think is some of the best matrix for these crystals from Bolivia. It's not completely unstable like decomposing

while the other side is filled with Stilbite

The luster is better than most Ferberites from this mine

this one is in great shape (especially for the size)

A highly aesthetic and dramatic Ferberite specimen

If you flip the piece over

with only a little roughness near the base of the piece where it detached from the pocket wall

this would make a great addition to your collection

It is incredibly rare to have FIVE individual phosphate species all on one specimen

A classic association specimen from one of the most well-known mines in Bolivia

Carbonate-rich Hydroxylapatite is actually a variety of Hydroxylapatite and is well known from a fair number of world localities

but overall

Despite their smaller size