On Tue, 27 Aug 2013 07:28:09 -0400, Stormin Mormon wrote:

Would it make sense to hook the diode to a 9 v
transistor battery in each polarity, and measure
the milliamps current in each direction?

"Normal" diodes would fry under those circumstances;
but I don't know what would happen with high-voltage
diodes. That's why I have the resistor there.