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 "U"

Gemstone	Crystal System	Density	Hardness	Refractive index	Treatments
Unakite	rock	3.00	6-7	1.74 to 1.76; 1.55 or 1.52 depending on area tested	none
Uvarovite	cubic	3.41-3.42	7.0-7.5	1.870	none