Alphabetical Gemstone List
Click on a letter for a list of gems:
A| B| C| D| E| F| G| H| I| J| K| L| M| N| O| P| Q| R| S| T|U| V| W| X|Y |Z

Gemstones that begin with the letter "F"

Gemstone	Crystal System	Density	Hardness	Refractive index	Treatments
Feldspar	monoclinic	2.56	6.0-6.5	1.518-1.526	none known
Fluorite	cubic	3.18	4.0	1.434	plastic or epoxy impregnation, irradiation, heating