Journal
Plain guides to choosing and caring for gemstones.
Caring for blue topaz
Topaz is hard but splits along one direction. How to wear it, clean it and store it.
Gemstone treatments, plainly
Heating, irradiation and the other things done to gems after mining, and why every listing here says which apply.
Millimeters or carats? Choosing a stone size
Why settings are measured in millimeters, how that converts to carats, and a size table for round stones.