Typography and a very bold color. That's all you really need. For Gerturde Contemporary.
Gerturde Contemporary Minimalist Business Card
Similar Designs:
MN Interactive's Minimalist Business Card
Catalyst Studios' Plastic Business Card
Gravity Dance's Bold Business Card
Chris Cavil's Minimalist Business Card
Jan Charvat's Sexy Minimalist Business Card
The Nienkamper Store's Business Card & Catalog
No SMK's Embossed Business Card
Gray Signal's Minimalist Business Card 
De'Lamour Photography Minimalist Business Card