I honestly don't know what I'm looking for, which I know makes it hard for you (the designer); sorry!  I like something fairly simple, modern, unique.  The "Black Diamond" in my company name refers to my time in the Marine Corps, where I was a Recon Marine and Scout Sniper.  So something associated with a Diamond (4 sided shape, not the jewel type) and/or scope reticle is a possibility too.  I'm really open to creative ideas!  I am not a fan of skulls, or "cartoonish" stuff.  Let me know if you have any questions.  Thanks!

Black Diamond Metalworks