I label the minerals with two-letter country abbreviation, follows by number. For example, my first mineral from Greenland was labeled as GL-001.
If the mineral is coming from US, two-letter country abbreviation, follows by state abbreviation and number. For example, the second mineral from Nevada was labeled as US-NV-002.
The label is sticked in the less presentable side of the minerals, preferably flat surface.
Once I put the minerals in the box, I also put a label outside of the box indicating that are inside that box.
For cataloging, I use MS PowerPoint and MS Excel. I separate the minerals according to the states or countries. These are the information for each mineral:
Image of mineral under white lights and UV lights, short-, medium-, and/or long-wave depend on their reactivity, phosphorescent and tenebrescent images if present.
ID number.
Type of minerals and their colors under particular wavelength of UV light.
Wavelength of UV light used in this image.
Locale of mineral.
Date acquired or purchased. For purchase, I indicate whom and where I bought it from, and price.