Gem Species: TOPAZ Hardness: 8 Density: 3.49 RI: 1.61

All London Blue Topaz is irradiated to produce the beautiful blue color. We buy only approved material that we cut to insure you get the most brilliant gem possible. Blue Topaz is the November and Scorpio birthstone.

Our gems are calibrated for easy design for the artist and use in standard settings by the jeweler, goldsmith or silversmith.