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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

moonstone
Feldspar

monoclinic 2.56 6.0-6.5 1.518-1.526 none known

fluorite
Fluorite

cubic 3.18 4.0 1.434 plastic or epoxy impregnation, irradiation, heating