It looks like schootky diode. Voltage drop on normal diode should be around
0,5-0,6V and on schootky around 0.2-0.25V. And this is what diode test in normal multimeter will show - typicaly in mV so 600 for normal and 250 for schootky.
Damn you, you stole my solid explanation :rofl_200:
Gleo...