Amethyst Quartz - Rio Grande do sul, Brazil.
Mohs hardness scale, with a lot of minerals reviewed. I searched a while to find a comprehensive list of Mineral hardness and this is the best I could uncover.Thing of Interest
Fluorite on Sphalerite from USA. Crystal Classics Minerals
Smoky quartz. Source: New Mexico, United States of America.
The rose quartz's amazing energy. www.soullightandlove.com
Agate Amethyst Geode (Blue Lace Agate.) From Brazil
In her series of striking collages, Istanbul-based illustrator Ceren Kilic uses mixed media to create other-worldly dreamscapes. Utilising a pastel colour palette, the images convey a sense of adventure...
Poster of rock & minerals, showing classification of
SEMI BLACK CRYSTAL OPAL
Garnet, The January Birthstone click on link and then type in search box , month birthstone (ie february birthstone) to see the infographic for each month.