Welcome to my mineral Gallery!The picture above represents a brief introduction to the shapes and characteristics of mineral specimens which are based on seven "crystal systems." A more thorough explanation can be found at www.yourgemologist.com. Also, see the article "Descriptive Crystal Habits."
Below are a few mineral links I've found on the Web that I like (this list will change over time):
Mineralium.com - seems nice for online purchasing of minerals.
2.3 cm - Tourmaline (watermelon) purchased from ALABAR Minerals at a local gem & mineral show.
amethist; 5.5x 8 cm
malachite on azurite; 6.5x 5.5 cm
malachite on azurite close-up
Azurite; 4.5x 3.5 cm
malachite; 4.2x 2.2 cm
malachite; 2.5x 3.5 cm
Opal on matrix; 11.5x 8.5x 5.5 cm
No "fire" (opalescence)in this opal, but a beautiful powder blue color still makes it an enjoable specimen.
Opal - an opal gem that displays opalescence ("fire"); 1.3x 1x .3 cm.
This gem is actually quite a bit whiter. I darkened it and saturated the colors a bit so they would be more visible in this shot. They are quite visible to the naked eye, but my close-up photography lighting skills leave something to be desired. The opal is quite white and filled with delicate "fire."
Quartz crystal; 7x 3.7x 2 cm
Rutilized Quartz (quartz crystal with inclusions of rutile); 4.7x 2.5x 1.7 cm.
Rutilized Quartz close-up.
Topaz crystal group; 2.3x 1.4x 1 cm (group).
Thomsonite nodule; 2.2x 2.2x 1.7 cm.
Wulfenite crystal group; 2x 1.5x 1 cm (group).
Dolomite cystal group, with Pyrite crystals ;
8.8x 7x 3.7 cm.
Note the very distinct Pyrite crystals growing on the Dolomite.
Okenite crystal group on matrix; 10.8x 6.5x 3.3 cm.
Okenite crystal group close-up.
Of special note is the probable fluorite formation near the right edge of the rock about half way up.
Fluorite construction that displays beautiful translucence and a "phantom crystal" in the inner region; 6.8x 5x 4.8 cm.
The same fluorite, but lighting from below (inside), which provides a more clear view of the octahedra cubic shapes.
A close-up of the previous image, again highlighting the cubic shapes that make up many fluorites.
Another fluorite, with lighting from below (inside), which provides a more clear view of the cubic crystal shapes (I call this my "small block" as it reminds me of the shape of a small block engine); 7.7x 4.5x 4.8 cm.
Fluorite. It's interesting how cubic shapes can cluster to form this beautiful pyramid-like shape. The light source was from below and produced the appearance of coming from inside; 8.7x 5.3x 6.3 cm.