A crystal or crystalline solid is a solid material whose constituents, such as atoms, molecules or ions, are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations.
There are 2 colors of fluorite in this specimen. There is a yellowish-green and the beautiful emerald green that is highly sought after.
This specimen comes from the type local. Hence its name. The brazilianite crystal is about 2 cm long and has a gemmy termination.
If you look at this very nice hematite, you will see my hand and camera reflected. That is how shiney this hematite is.
This is one of the brightest watermelon tourmalines I have. It is really nice to look at and comes with a stand.
Tanzanite is a unique variety of zoisite found only in the Merelani Hills of Tanzania.
This is a raw cluster of Prehnite balls with a couple small Epidote inclusions.
This is a nice little piece of clear Gypsum, also known as Selenite.
This is a very cool piece. The iridescence takes place on the defined octahedral crystals, but on the base, where the contact was, it is the usual ...
Now this is what I call a specimen! On one half of the piece you have some great, textured Galena cubes, all in great condition, then on the other ...
This is a great specimen of creedite! Other than some minor contact damage this piece is in great condition.