Gem with beefy arms

I realize we're well past the "beefy arms" fad that swept Thingiverse for like two weeks, but... I made a couple of these as speaker gifts for pdxruby.org, and then I just kept making more.

A few notes:

- This looks especially nice in a translucent filament.

- I typically print with supports in Cura set to "everywhere", but you can probably get away without this.

- The bottom is truncated so that the thing will (a) stick to the build plate and (b) stand up on its own. If you're having adhesion problems (probably with the point of the gem, which has the smallest surface area), you have a few choices:
- add a brim
- enlarge the print
- drop the print a few more mm below the build plate (i.e., cut off more of the bottom)
- copy and edit the source parts on TinkerCAD: https://www.tinkercad.com/things/1bjLE3DICk3-gem-with-beefy-arms