I've had these for a bit but I wanted to post this build thread. I also made the schwartz ring, but here's a detailed build of the pendant. I started with the screencapped reference image.
I created the 3d model in AutoCAD.
I printed it in Black Detail and in the Frosted Ultra Detail material from Shapeways.
With the help of a professional caster, I had a silicon mold made, wax cast from the mold, and the wax is used in the lost wax casting process to produce it in antique bronze. The mold is seen there in blue.
I've then applied a patina using liver of sulfer, disolved in water.
Dipping the pieces in the solution for a couple minutes made them dark.
To neutralize the reaction, I then dipped them in a baking soda and water mixture.
and brushed it to bring out the details.
Perfect!
Photos of the patina process were taken with Google Glass

I created the 3d model in AutoCAD.

I printed it in Black Detail and in the Frosted Ultra Detail material from Shapeways.


With the help of a professional caster, I had a silicon mold made, wax cast from the mold, and the wax is used in the lost wax casting process to produce it in antique bronze. The mold is seen there in blue.

I've then applied a patina using liver of sulfer, disolved in water.

Dipping the pieces in the solution for a couple minutes made them dark.


To neutralize the reaction, I then dipped them in a baking soda and water mixture.

and brushed it to bring out the details.


Perfect!

Photos of the patina process were taken with Google Glass