Colorado Amazonite Options

[CP]

Here are some pictures of Colorado Amazonite which we discuss and work in often.

Small thumbnail size specimens


Large cabinet piece


The blue coloration of amazonite is due to a very small amount of lead while formation occured.
Cabochons from amazonite sometimes have this elegant "sheen" or chatoyancy like this one Mrs.CP did.

[Dave S.]

Adding my own Amazonite pics to the mix.
The first two pics show a crystal that is maybe a "Manebach twin".






A sharp crystal. (not sure of the twin form)








3 crystals that I am pretty sure are "UN-TWINNED" (rare for the Feldspar mineral family)
Even though 2 of the crystals are attached, I don't think they share a twin structure.








The single, un-twinned crystal from above has another rarity for feldspar(amazonite), it has some pretty good translucency (light can pass through the crystal). Here it is with 2 different headlamps.








This is 4 crystals (2 sets of "Carlsbad" twin crystals)








A Large well formed "Carlsbad twin" crystal. It broke off from an even taller amazonite crystal (unable to find the base).












Here is the same crystal next to another Microcline feldspar "Carlsbad twin". In this pic you can see how the crystals twin, to form a psudo-hexagonal crystal.







Last but not least a Smokey quartz / amazonite combo!

The large smokey has a 2nd overgrowth over the termination(tip), making it a "scepter" crystal. The smokey also has tiny inclusions of goethite. And on it's back it has a crystal of amazonite that had the termination broken off.

Attached thumbnail(s)